1999 Mercury Mountaineer Spark Plugs

Keep Your 1999 Mercury Mountaineer in Top Shape with Quality Spark Plugs

Whether you’re repairing or upgrading your Spark Plug, using high-quality parts is key to keeping your 1999 Mercury Mountaineer looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Spark Plugs. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.

Top-Rated Spark Plugs from Trusted Brands

Looking for a reliable Spark Plug? We’ve got you covered with options from brands you know and trust like Autolite, NGK, and Champion. For example, Autolite Spark Plugs start at just $4.29 with an average 4.6 star rating. NGK and Champion offer similar pricing and quality, backed by strong customer feedback. With over 2,702 reviews and a solid 5 star average, you can shop with confidence knowing other Mercury Mountaineer owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1999 Mercury Mountaineer Spark Plug at Advance Auto Parts is around $8.56, with a range that starts at $2.99 and goes up to $23.99. With 37 options in stock from 7 trusted brands, finding the right fit is easy. Popular picks like Platinum Spark Plug: Enhanced Durability & Fuel Efficiency, Copper Resistor Spark Plug: Quick Starts & Reliable Performance, and Iridium XP Fine wire Spark Plug: Improved Durability, More Focused Ignition start at just $4.29 and offer a great balance of form and function.

Explore Related Parts

While you’re upgrading or replacing your Spark Plug, don’t forget to check out other key components like Ignition Coils and Boots and Ignition Wires. At Advance Auto Parts, we’re here to help you keep your 1999 Mercury Mountaineer in peak condition, inside and out.

Essential 1999 Mercury Mountaineer Spark Plugs

NGK – G-Power Spark Plug (ZNAR6AGP): Enhanced Durability & Fuel Efficiency (Part No.1698)

G-Power Spark Plug (ZNAR6AGP): Enhanced Durability & Fuel Efficiency

from

$9.49
NGK G-Power Platinum spark plugs are the best single platinum spark plugs at an economical price. G-Power plugs feature a fine wire platinum center electrode and a trapezoidal cut ground electrode that offers increased durability, improved fuel efficiency, lower emissions, faster starts and quicker acceleration over conventional nickel spark plugs. An excellent upgrade for vehicles which used nickel alloy spark plugs originally. For better performance consider upgrading to a NGK Iridium IX plug. For even greater performance consider upgrading to a NGK RUTHENIUM HX plug.

Product Features:
  • SINGLE PLATINUM TIP: Fine wire 0.6 millimeter platinum tip center electrode ensures improved durability and a consistently stable spark
  • PLATINUM ALLOY: G-Power platinum provides exceptional value with increased performance and longer service intervals than factory nickel plugs
  • TRAPEZOIDAL CUT GROUND ELECTRODE: Reduces quenching design produces improved ignitability and performance
  • SOLID COPPER CORE: 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges
  • COLD-ROLLED THREADS: Prevents cross-threading and damage to cylinder heads
  • RECOMMENDED USAGE: Lower cost alternative to double precious metal spark plugs or as an upgrade to OE nickel alloy spark plugs
  • Enhanced Vehicle Performance: Delivers better overall engine performance, making it an excellent choice for those seeking an upgrade from standard spark plugs.
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E3 – DiamondFIRE Automotive Spark Plug: More Power & Fuel Efficiency (Part No.E3.53)

DiamondFIRE Automotive Spark Plug: More Power & Fuel Efficiency

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$8.49
The Premium DiamondFire Automotive Spark Plug is engineered to deliver peak performance and efficiency for your vehicle. Featuring E3’s patented Diamond Fire edge-to-edge ground electrode, it ensures a faster, more complete burn for smoother acceleration and idle. The innovative “diamond-shaped” side wire electrode enhances combustion by quickly igniting the air/fuel mixture, resulting in a larger and faster flame kernel. This translates to improved power output – up to 6% on average – and better fuel efficiency, saving you money while reducing engine carbon deposits. Constructed with durable nickel for both the center and ground electrode tips, this spark plug is built to last. Its tapered seat design ensures a secure fit, and the pre-gapped configuration eliminates the need for adjustments, making installation hassle-free. With its advanced technology, this spark plug not only boosts performance but also promotes cleaner combustion, making it a smart upgrade for any vehicle.

Product Features:
  • E3’s Diamond Fire edge to edge ground electrode provides maximum performance with increased efficiency and a faster more complete burn
  • Smoother Acceleration & Idle – The faster flame initiated by the spark plug results in a more complete burn of the ingested fuel charge. More pressure is created against the piston more fuel is put to work
  • Energy – Power output improved up to 6% on average in the typical operating ranges. Results will vary.
  • Efficiency – The “diamond shaped” side wire electrode projects the combustion spark in a way that more quickly ignites the air/fuel mixture, thereby creating a significantly faster and larger flame kernel. The result is that more fuel is put to work durin
  • E3’s patented Diamond Fire Technology provides a cleaner burning combustion, which translates into fuel savings and reduced engine carbon deposits
  • The Spark Plugs are pre-gapped at the factory and cannot be adjusted.
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DENSO – Iridium TT Spark Plug: Ultimate Endurance and Power, 0.4mm Iridium Tip, IT16TT (Part No.4713)

Iridium TT Spark Plug: Ultimate Endurance and Power, 0.4mm Iridium Tip, IT16TT

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$13.99
The Iridium TT Spark Plug combines the durability of an OE-style plug with the power and torque of high-performance engineering, making it a standout choice for drivers seeking reliability and efficiency. Featuring a 0.4mm Iridium center electrode – the world’s smallest diameter – it maximizes firing potential, while the 0.7mm needle tip ground electrode promotes higher spark energy and minimizes heat quenching. Built with DENSO’s patented Iridium-Rhodium alloy formula, it boasts the highest concentration of Iridium for unmatched durability, withstanding temperatures over 4000 Deg F. The advanced Twin-Tip Technology pairs a fine wire Iridium center electrode with a needle tip Platinum ground electrode, ensuring superior ignition and fuel efficiency. Designed to enhance fuel economy and reduce emissions, this spark plug allows you to drive farther with fewer stops. Developed to original equipment specifications and utilizing a 360-degree laser welding process, it guarantees exceptional structural strength and consistent performance. Perfect for those who demand endurance and power in every drive.

Product Features:
  • 0.4mm Iridium Center Electrode: World’s Smallest Diameter that maximizes firing potential
  • 0.7mm Needle Tip Ground Electrode: Promotes higher spark energy and less heat quenching
  • DENSO Patented Optimized Iridium-Rhodium Alloy Formula: Highest concentration of Iridium vs. competitors for greater durability
  • DENSO Patented 360 degree laser welding process: Ensuring exceptional quality bond and structural strength with the Iridium Center Electrode
  • Durability of an OE style plug combined with Power and Torque of high performance.
  • Withstands temperatures greater than 4000 degree Fahrenheit
  • Iridium TT
  • Advanced Twin-Tip Technology: Combines a Fine Wire Iridium Center Electrode with a Needle Tip Platinum Ground Electrode for superior ignition and efficiency.
  • Enhanced Fuel Economy and Lower Emissions: Designed to provide better fuel economy and reduced emissions, allowing you to drive around the Earth over 4 times.
  • Original Equipment Specification: Developed from the Super Ignition Plug (SIP) design, ensuring reliable and consistent performance.
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Autolite – Platinum Spark Plug (AP5143): Improved Performance & Durability (Part No.AP5143)

Platinum Spark Plug (AP5143): Improved Performance & Durability

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$4.99
Autolite Platinum spark plugs are crafted for exceptional performance and durability, making them ideal for older engine applications. Featuring a platinum center electrode firing tip, these spark plugs ensure quicker firing, smoother starts, and enhanced fuel efficiency. The platinum design prevents gap erosion, extending service life, while the high alumina ceramic insulator offers superior thermal conductivity and insulation for added strength. A multi-rib insulator minimizes flash-over, and the nickel-plated shell resists corrosion, ensuring long-lasting reliability. With a long projection center electrode and tapered seat type, these performance-grade spark plugs deliver consistent ignition and improved acceleration. Designed with a nickel ground electrode tip and integrated resistor, they provide optimal functionality for demanding engine conditions.

Product Features:
  • Engineered with a platinum firing tip that prevents gap erosion for longer service life.
  • Its high alumina ceramic insulator provides thermal conductivity and superior insulation for increased strength.
  • The multi-rib insulator prevents flash-over.
  • Designed with a nickel-plated shell that is corrosion resistant to provide increased durability for extended life.
  • Incorporates a long projection center electrode and tapered seat type for consistent ignition and improved acceleration.
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Accel – HP Copper Spark Plug (346): Superior Heat Dissipation & Performance (Part No.8160)

HP Copper Spark Plug (346): Superior Heat Dissipation & Performance

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$165.99
ACCEL HP Spark Plugs are made with a Copper core which is a better conductor than Platinum and Iridium. They deliver a stronger spark especially in high performance applications where high combustion pressures are present. Copper is much better at dissipating heat than other materials which lessens the chance of a misfire. ACCEL HP Spark Plugs are capable allowing you to open the gap exposing a larger flame kernel or close it if needed for high boost applications. All ACCEL HP Spark Plugs have machine rolled threads allowing for a more precise thread engagement and torque retention.

Product Features:
  • For use with Black Coil Boot, OE Coil 3L3E or ACCEL 140033 or 140033-8
  • One Piece Design – Won’t break off in head during removal like two piece design
  • Copper Core – Copper is a better conductor than Iridium or Platinum plugs
  • Heat Dissipation – Copper dissipates Heat Much better than other materials
  • C – Cut Design – un-shrouding the spark kernel
  • See PN 346 for Single Spark Plug
  • Gapable – Unlike Iridium or Platinum
  • Machine Rolled Threads-Precise thread engagement
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ACDelco – Double Platinum Spark Plug: Long-Lasting Performance & Durability (Part No.41-810)

Double Platinum Spark Plug: Long-Lasting Performance & Durability

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$10.99
ACDelco Gold (Professional) Double Platinum Spark Plug are a high quality alternative to Original Equipment (OE) parts. With a copper core and double platinum pads on the center electrode, these plugs are designed to deliver long-lasting performance. These premium aftermarket replacement spark plugs are manufactured to meet your expectations for fit, form, and function. ACDelco Gold (Professional) parts are manufactured to meet your expectations for fit, form, and function, making them a smart choice for General Motors vehicles, as well as most makes and models, including special applications. These high-quality parts are backed by General Motors. Some ACDelco Gold parts may have formerly appeared as ACDelco Professional.

Product Features:
  • One-piece, fired-in suppressor seal blends three glass types for a gas-tight seal that helps reduce radio frequency and engine interference, regulate spark plug energy, and protect against compression pressures for long life
  • Double platinum point pad on center and ground electrode offer excellent durability and consistent voltage demands to help reduce wear on ignition system
  • Pure copper core results in cooler electrode temperature for maximized durability and fouling resistance
  • Some ACDelco Gold parts may have formerly appeared as ACDelco Professional
  • Premium aftermarket replacement part
  • Manufactured to meet specifications for fit, form, and function for General Motors vehicles as well as most makes and models
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Accel – HP Copper Spark Plug: Superior Heat Dissipation & Stronger Spark (Part No.8160C1)

HP Copper Spark Plug: Superior Heat Dissipation & Stronger Spark

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$184.99
ACCEL HP Spark Plugs are made with a Copper core which is a better conductor than Platinum and Iridium. They deliver a stronger spark especially in high performance applications where high combustion pressures are present. Copper is much better at dissipating heat than other materials which lessens the chance of a misfire. ACCEL HP Spark Plugs are capable allowing you to open the gap exposing a larger flame kernel or close it if needed for high boost applications. All ACCEL HP Spark Plugs have machine rolled threads allowing for a more precise thread engagement and torque retention.

Product Features:
  • One Piece Design – Won’t break off in head during removal like two piece designs
  • The Copper core is a better conductor than Iridium or Platinum plugs
  • Copper dissipates heat much better than other materials
  • C – Cut Design un-shrouds the spark kernel for a better burn
  • Unlike Iridium or Platinum plugs, the ACCEL HP plugs are capable
  • Machine rolled threads for precise thread engagement
  • One step colder than stock
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DENSO – Iridium Power Spark Plug: Maximum Spark Energy, 0.4mm Iridium Tip, IT20 (Part No.5326)

Iridium Power Spark Plug: Maximum Spark Energy, 0.4mm Iridium Tip, IT20

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$13.99
The Iridium Power Spark Plug features the world’s smallest Iridium Center Electrode at just 0.4mm, delivering enhanced spark energy for maximum combustion efficiency. Engineered with a patented 360-degree laser welding assembly process, this spark plug ensures unmatched durability and precision. Its U-groove and taper-cut ground electrode design optimizes flame propagation, resulting in improved engine performance. Built to withstand extreme temperatures exceeding 4000 degrees Fahrenheit, it is burnished with nickel plating for exceptional high-temperature endurance and superior corrosion resistance. Designed for versatility, it offers a wide range of part numbers to fit thousands of applications, including classic and collector cars. With its advanced Iridium tip material and tapered seat type, this spark plug is the ultimate choice for drivers seeking peak performance and long-lasting reliability.

Product Features:
  • World’s smallest Iridium Center Electrode (0.4mm) for improved spark for maximum combustion
  • Patented 360-degree laser welding assembly process
  • U-groove and taper cut ground electrode to maximize flame propagation.
  • Withstands temperatures greater than 4000 degree Fahrenheit
  • Burnished nickel plating for high temperature endurance and superior corrosion resistance
  • Wide range of part numbers for thousands of applications, including classic and collector cars
  • Iridium Power
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ACDelco – RAPIDFIRE Platinum Spark Plug: Reduces Misfires & Enhances Durability (Part No.12)

RAPIDFIRE Platinum Spark Plug: Reduces Misfires & Enhances Durability

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$6.99
ACDelco Gold (Professional) RAPIDFIRE Spark Plugs are a high quality alternative to Original Equipment (OE) parts. These RAPIDFIRE Single Platinum Performance Spark Plugs are designed for everyday use and are a high quality replacement for many vehicles on the road today. These premium aftermarket spark plugs have high-quality suppressors that help prevent misfiring, an improved plug to boot seal, and a pure copper core for greater durability. These premium aftermarket replacement spark plugs are manufactured to meet your expectations for fit, form, and function. ACDelco Gold (Professional) parts are manufactured to meet your expectations for fit, form, and function, making them a smart choice for General Motors vehicles, as well as most makes and models, including special applications. These high-quality parts are backed by General Motors. Some ACDelco Gold parts may have formerly appeared as ACDelco Professional.

Product Features:
  • Solid state suppressor, with two-piece glass and brass seal, can help reduce radio frequency interference, regulates spark energy for long electrode life, and helps protect against high combustion pressures
  • Pure copper core provides great heat transfer and helps maximize plug durability
  • Platinum on center electrode enables superior spark characteristics and can reduce voltage requirements of the ignition system
  • Ribless insulator helps optimize plug to boot seal
  • Some ACDelco Gold parts may have formerly appeared as ACDelco Professional
  • Premium aftermarket replacement part
  • Manufactured to meet specifications for fit, form, and function for General Motors vehicles as well as most makes and models
  • High-Quality Suppressors: Designed to help prevent misfiring, ensuring smooth and reliable engine performance.
  • Improved Plug to Boot Seal: Enhances the connection between the spark plug and the ignition system, reducing the risk of leaks and improving overall efficiency.
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Motorcraft – Double Platinum Spark Plug (AGSF22FM): Enhanced Durability & Reliability (Part No.SP-500)

Double Platinum Spark Plug (AGSF22FM): Enhanced Durability & Reliability

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$7.49
Double Platinum Spark Plug (AGSF22FM) offers enhanced durability and reliability, making it the ideal choice for maintaining peak engine performance. Specifically engineered to meet strict Ford standards, these spark plugs are an exact fit for Ford, Lincoln, and Mercury vehicles, ensuring seamless compatibility. Featuring a platinum center electrode tip and nickel ground electrode tip, they resist oxidation and arc erosion for long-lasting performance. The multi-rib insulator design protects against misfires, while the tapered seat type ensures a secure fit. With service intervals of up to 100,000 miles, these spark plugs reduce fuel consumption, optimize emissions, and help prevent false check engine lights. Backed by Motorcraft’s Service Parts Warranty, they deliver the same reliable performance as the original equipment installed during manufacturing. Designed for a broad range of applications, these spark plugs are crafted from high-quality materials to provide confidence and reliability for domestic and import cars and trucks of all sizes.

Product Features:
  • Motorcraft spark plugs are matched to specific engines to provide enhanced durability, eliminate misfires, reduce fuel consumption and optimize emissions.
  • Backed by Motorcraft’s Service Parts Warranty
  • Exact fit for Ford, Lincoln and Mercury vehicles
  • Resistant to oxidation and arc erosion.
  • Multi-rib insulator protects against misfire.
  • Service intervals of up to 100,000 miles.
  • Motorcraft Spark Plugs are designed with high quality materials to provide reliable performance for almost any application.
  • Motorcraft Spark Plugs are what was in the vehicle when it was manufactured
  • Motorcraft ignition components help prevent false check engine lights.
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E3 – DiamondFIRE Automotive Spark Plug: More Power & Fuel Efficiency (Part No.E3.62)

DiamondFIRE Automotive Spark Plug: More Power & Fuel Efficiency

from

$8.49
The Premium DiamondFire Automotive Spark Plug is engineered to deliver peak performance and efficiency for your vehicle. Featuring E3’s patented Diamond Fire edge-to-edge ground electrode, it ensures a faster, more complete burn for smoother acceleration and idle. The innovative “diamond-shaped” side wire electrode enhances combustion by quickly igniting the air/fuel mixture, resulting in a larger and faster flame kernel. This translates to improved power output by up to 6% on average and greater fuel efficiency, reducing engine carbon deposits and saving you money at the pump. Constructed with durable nickel for both the center and ground electrode tips, this spark plug is built to last. Its tapered seat design ensures a secure fit, and the pre-gapped configuration eliminates the need for adjustments, making installation hassle-free. Upgrade to the DiamondFire Spark Plug for cleaner combustion, enhanced engine performance, and long-term reliability.

Product Features:
  • E3’s Diamond Fire edge to edge ground electrode provides maximum performance with increased efficiency and a faster more complete burn
  • Smoother Acceleration & Idle – The faster flame initiated by the spark plug results in a more complete burn of the ingested fuel charge. More pressure is created against the piston more fuel is put to work
  • Energy – Power output improved up to 6% on average in the typical operating ranges. Results will vary.
  • Efficiency – The “diamond shaped” side wire electrode projects the combustion spark in a way that more quickly ignites the air/fuel mixture, thereby creating a significantly faster and larger flame kernel. The result is that more fuel is put to work durin
  • E3’s patented Diamond Fire Technology provides a cleaner burning combustion, which translates into fuel savings and reduced engine carbon deposits
  • The Spark Plugs are pre-gapped at the factory and cannot be adjusted.
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Autolite Iridium – Iridium XP Fine wire Spark Plug: Improved Durability, More Focused Ignition (Part No.XP103)

Iridium XP Fine wire Spark Plug: Improved Durability, More Focused Ignition

from

$10.99
Autolite has over 100 years of engineering experience and has sold over 11 billion plugs. Designed and engineered in the USA, the Autolite Iridium XP spark plugs feature an iridium-enhanced 0.6mm finewire design and patented platinum sidewire technology to provide better overall durability and a more focused ignition for enhanced ignitability and performance. Features double Iridium-enhanced alloy technology center electrode for improved durability and wear resistance.

Product Features:
  • 0.6 mm finewire design improves ignitability
  • Patented V-trimmed platinum sidewire technology resists wear
  • OE equivalent design is engineered for every engine
  • Designed for better overall durability with virtually no gap erosion
  • Double Iridium-enhanced alloy technology ensures superior wear resistance for extended plug life.
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NGK – Iridium IX Spark Plug (TR55IX): Outstanding Acceleration & Durability (Part No.7164)

Iridium IX Spark Plug (TR55IX): Outstanding Acceleration & Durability

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$14.99
NGK Iridium IX spark plugs are specifically designed for the performance enthusiast. Iridium IX provides outstanding acceleration, high fuel efficiency and durability. NGK Iridium IX plugs offer extreme ignitability and exceptional anti-fouling. Tapered c

Product Features:
  • SINGLE IRIDIUM TIP: Fine wire 0.6 millimeter iridium tip center electrode ensures high durability and a consistently stable spark
  • IRIDIUM ALLOY CENTER ELECTRODE: Iridium’s density (6x that of platinum) and extremely high melting point is perfect for modern high efficiency engines
  • TAPERED CUT GROUND ELECTRODE: Reduced quenching design produces outstanding ignitability, improved acceleration, fuel efficiency and durability
  • SOLID COPPER CORE: 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges
  • TRIVALENT METAL PLATING: Delivers superior anti-corrosion and anti-seizing properties, ensuring ease of installation and removal
  • RECOMMENDED USAGE: Modified or high performance applications, or as an upgrade to OE nickel alloy spark plugs
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NGK – Ruthenium HX Spark Plug (TR5AHX): High Ignitability & Durability (Part No.94567)

Ruthenium HX Spark Plug (TR5AHX): High Ignitability & Durability

from

$15.99
NGK Ruthenium HX High Ignitability spark plugs are the best in class plug for todays modern vehicles. Patented Ruthenium technology offers the most advance tip technology and delivers the highest performance and life expectancy. Created from advanced OE technology as a high ignitability plug, Ruthenium HX spark plugs come with patented, specialized OEM DFE and PSPE tip designs. NGK Ruthenium HX High Ignitability spark plugs provide a more complete fuel burn resulting in a quicker throttle response, smoother idle and better cold starts. Ruthenium center electrode provides industry leading durability.

Product Features:
  • HIGH IGNITABILITY DOUBLE FINE ELECTRODE DESIGN: Combines 0.6 millimeter ruthenium center with opposed fine wire platinum ground electrode
  • RUTHENIUM ALLOY CENTER ELECTRODE: NGK’s patented ruthenium technology produces maximum performance, ignitability & durability at high temperatures
  • PLATINUM PIN TYPE GROUND ELECTRODE: Provides more complete fuel burn, quicker throttle response, smoother idle and better cold starts
  • SOLID COPPER CORE: 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges
  • TRIVALENT METAL PLATING: Delivers superior anti-corrosion and anti-seizing properties, ensuring ease of installation and removal
  • RECOMMENDED USAGE: Modern vehicles using OE DFE type spark plugs or for those seeking an aftermarket plug with the latest OE technology
  • Specialized OEM Tip Designs: Features DFE and PSPE tip designs for enhanced ignitability and efficiency.
  • Industry-Leading Durability: Ruthenium center electrode ensures long-lasting performance and reliability.
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Champion – Platinum Power Spark Plug (RS14PYC6): Powerful Performance & Durability (Part No.3013)

Platinum Power Spark Plug (RS14PYC6): Powerful Performance & Durability

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$4.99
Champion Platinum Power spark plugs are engineered for exceptional performance and durability, making them an ideal choice for maintaining peak engine efficiency. Featuring a platinum center electrode, these spark plugs ensure long-lasting reliability and consistent performance. The fine-wire center electrode enhances ignitability, while the V-trimmed ground electrode sharpens spark focus for optimal combustion. Constructed with Heat-Active alloy, the electrodes quickly reach and maintain the ideal operating temperature, ensuring smooth engine operation under various conditions. The platinum-tipped center wire resists wear and helps maintain the proper gap specification throughout the life of the plug, reducing the need for frequent replacements. Designed as a standard replacement with a tapered seat type, these spark plugs are built to meet or exceed OEM Standards. With a nickel ground electrode tip and integrated resistor, they deliver dependable performance and value, making them a smart investment for your vehicle’s ignition system.

Product Features:
  • Platinum Power- Premium Spark Plug. Powerful Performance.
  • Platinum center electrode for long life
  • Fine-wire center electrode for greater ignitability
  • V-trimmed ground electrode promotes sharper spark focus
  • Heat-Active alloy allows electrodes to reach optimal temperature
  • Platinum tipped center wire resists wear and helps to maintain proper gap spec over life of the plug
  • Platinum Center Electrode: Features a platinum center electrode for extended durability and long life.
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Motorcraft – High-Durability Spark Plug: Reduces Misfires & Fuel Consumption (Part No.SP-500-X)

High-Durability Spark Plug: Reduces Misfires & Fuel Consumption

from

$9.49
Motorcraft Spark Plugs are original equipment on Ford Motor Company vehicles, engineered to meet strict Ford engineering standards for performance and reliability. These spark plugs are matched to specific engines to provide enhanced durability, eliminate misfires, reduce fuel consumption, and optimize emissions. They are resistant to oxidation and arc erosion, feature a multi-rib insulator to protect against misfire, and offer service intervals of up to 100,000 miles. Backed by Motorcraft’s Service Parts Warranty, these spark plugs are an exact fit for Ford, Lincoln, and Mercury vehicles and are designed with high-quality materials to provide reliable performance for almost any application. Motorcraft ignition components also help prevent false check engine lights, ensuring your vehicle runs smoothly.

Product Features:
  • Motorcraft spark plugs are matched to specific engines to provide enhanced durability, eliminate misfires, reduce fuel consumption and optimize emissions.
  • Backed by Motorcraft’s Service Parts Warranty
  • Exact fit for Ford, Lincoln and Mercury vehicles
  • Resistant to oxidation and arc erosion.
  • Multi-rib insulator protects against misfire.
  • Service intervals of up to 100,000 miles.
  • Motorcraft Spark Plugs are designed with high quality materials to provide reliable performance for almost any application.
  • Motorcraft Spark Plugs are what was in the vehicle when it was manufactured
  • Motorcraft ignition components help prevent false check engine lights.
  • Engineered for Ford Vehicles: Motorcraft High-Durability Spark Plugs are original equipment on Ford, Lincoln, and Mercury vehicles, ensuring a perfect fit and optimal performance.
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Champion – Iridium Spark Plug (RET8ZWYPB): Maximum Performance & Longevity (Part No.9406)

Iridium Spark Plug (RET8ZWYPB): Maximum Performance & Longevity

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$8.99
Champion Iridium Spark Plug is engineered for maximum performance and durability, making it the ultimate choice for demanding drivers. Featuring a fine-wire iridium center electrode and platinum ground electrodes, it delivers exceptional ignitability and a sharper spark focus for enhanced engine efficiency. The V-trimmed ground electrode ensures precise spark delivery, while the Heat-Active alloy allows the electrodes to quickly reach and maintain optimal operating temperatures under all engine loads. Designed with a tapered seat and resistor type, this premium spark plug offers superior performance and extended longevity. Whether you’re looking for stable operation or maximum life, the Champion Iridium Spark Plug is built to meet the highest Standards of reliability and performance.

Product Features:
  • Champion Iridium – Maximum Performance. Premium Spark Plug
  • Iridium center electrode delivers maximum life
  • Fine-wire center electrode and V-trimmed for greater ignitability
  • V-trimmed ground electrode promotes sharper spark focus
  • Maintains stable operating temperature under all engine loads
  • Heat-Active alloy allows electrodes to reach optimal temperature quickly
  • Platinum Ground Electrodes: Equipped with platinum ground electrodes, this spark plug promotes a sharper spark focus for enhanced ignitability.
  • Tapered Seat and Resistor Type: Designed with a tapered seat type and resistor type, the Champion Iridium Spark Plug ensures superior performance and longevity.
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Champion – Platinum Power Spark Plug (RS10PYC): Powerful Performance & Durability (Part No.3408)

Platinum Power Spark Plug (RS10PYC): Powerful Performance & Durability

from

$4.49
Champion Platinum Power spark plugs are engineered to deliver exceptional performance and durability, making them an ideal choice for maintaining peak engine efficiency. Featuring a platinum center electrode, these spark plugs ensure long-lasting reliability and consistent performance. The fine-wire center electrode enhances ignitability, while the V-trimmed ground electrode sharpens spark focus for optimal combustion. Constructed with the exclusive Heat-Active alloy, these plugs quickly reach and maintain the ideal operating temperature, ensuring smooth engine operation under various conditions. The platinum-tipped center wire resists wear and helps maintain the proper gap specification throughout the plug’s lifespan, reducing the need for frequent replacements. Designed as a standard replacement with a tapered seat type, these spark plugs are compatible with a wide range of vehicles. With a nickel ground electrode tip and integrated resistor, they provide dependable performance and value, making them a smart investment for any vehicle owner seeking reliable ignition components.

Product Features:
  • Platinum Power- Premium Spark Plug. Powerful Performance.
  • Platinum center electrode for long life
  • Fine-wire center electrode for greater ignitability
  • V-trimmed ground electrode promotes sharper spark focus
  • Heat-Active alloy allows electrodes to reach optimal temperature
  • Platinum tipped center wire resists wear and helps to maintain proper gap spec over life of the plug
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Motorcraft – Standard Spark Plug: Enhances Durability & Reduces Fuel Consumption (Part No.SP-413)

Standard Spark Plug: Enhances Durability & Reduces Fuel Consumption

from

$4.99
Motorcraft Spark Plugs are original equipment on Ford Motor Company vehicles, engineered to meet strict Ford engineering standards for performance and reliability. These spark plugs are matched to specific engines to provide enhanced durability, eliminate misfires, reduce fuel consumption, and optimize emissions. Backed by Motorcraft’s Service Parts Warranty, they are an exact fit for Ford, Lincoln, and Mercury vehicles and are resistant to oxidation and arc erosion. The multi-rib insulator protects against misfire, and they offer service intervals of up to 100,000 miles. Designed with high-quality materials, Motorcraft Spark Plugs provide reliable performance for almost any application and help prevent false check engine lights. With copper center and ground electrode tips, these spark plugs ensure your vehicle runs as it did when it was first manufactured.

Product Features:
  • Motorcraft spark plugs are matched to specific engines to provide enhanced durability, eliminate misfires, reduce fuel consumption and optimize emissions.
  • Backed by Motorcraft’s Service Parts Warranty
  • Exact fit for Ford, Lincoln and Mercury vehicles
  • Resistant to oxidation and arc erosion.
  • Multi-rib insulator protects against misfire.
  • Service intervals of up to 100,000 miles.
  • Motorcraft Spark Plugs are designed with high quality materials to provide reliable performance for almost any application.
  • Motorcraft Spark Plugs are what was in the vehicle when it was manufactured
  • Motorcraft ignition components help prevent false check engine lights.
  • Reduces Fuel Consumption: Specifically matched to engines to optimize fuel efficiency, helping you save on fuel costs.
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Autolite – Double Platinum Spark Plug: Enhanced Durability & Performance (Part No.APP103)

Double Platinum Spark Plug: Enhanced Durability & Performance

from

$6.99
The Double Platinum Spark Plug is engineered for exceptional durability and performance, making it a top choice for distributor-less ignition system (DIS) engines. Featuring a platinum-to-platinum design, it minimizes gap erosion and reduces misfires, ensuring a longer service life compared to copper and standard platinum plugs. Its yttrium-enhanced ground electrode delivers superior heat transfer, allowing it to withstand high temperatures and pressures for extended durability. The high alumina ceramic insulator optimizes thermal conductivity and dielectric strength, while the multi-rib insulator prevents flash-over for reliable operation. With a mid-projection center electrode and tapered seat type, this performance-grade spark plug is built to deliver consistent ignition and efficiency. Both the center and ground electrode tips are crafted from platinum, ensuring robust functionality and reliability. Designed to meet the demands of modern engines, this spark plug offers outstanding value and long-lasting performance.

Product Features:
  • Engineered with a platinum-to-platinum design that prevents gap erosion, extending the life of the spark plug.
  • The yttrium-Enhanced Ground Electrode delivers superior heat transfer that delivers more durability under high temps and pressure for greater life.
  • Its high alumina ceramic insulator provides optimum thermal conductivity and dielectric strength.
  • The multi-rib insulator prevents flash-over.
  • Designed with a mid-projection center electrode and tapered seat type to ensure consistent ignition and improved engine efficiency.
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NGK – V-Power Nickel Spark Plug (TR55-1): Enhanced Ignitability & Performance (Part No.2683)

V-Power Nickel Spark Plug (TR55-1): Enhanced Ignitability & Performance

from

$5.99
NGK V-Power spark plugs offer reliable performance and improved ignitability over standard nickel plugs. Engineered specifically for OE applications, the special V-cut nickel alloy center electrode and concave ground electrode of NGK’s V-Power spark plug increases ignitability providing quicker starts and smoother idle. NGK’s legendary high grade alumina silicate ceramic creates a stronger insulator for optimal dielectric performance. Trivalent metal plating ensures superior anti-corrosion and anti-seizing properties.

Product Features:
  • ACTUAL OE or EQUIVALENT DESIGN: OEM quality construction nickel alloy center electrode with V-groove provides consistent performance
  • RECOMMENDED USAGE: Best for vehicles with OE nickel alloy plugs, not recommended on vehicles with factory precious metal plugs
  • NGK’s OE CERAMIC TECHNOLOGY: High grade alumina silicate ceramic creates a stronger insulator for optimal dielectric performance
  • SOLID COPPER CORE: 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges
  • COLD-ROLLED THREADS: Prevents cross-threading and damage to cylinder heads
  • TRIVALENT METAL PLATING: Delivers superior anti-corrosion and anti-seizing properties, ensuring ease of installation and removal
  • Enhanced Ignitability: The V-cut nickel alloy center electrode and concave ground electrode design of NGK V-Power spark plugs provide quicker starts and smoother idle.
  • OE Application Specific: Engineered specifically for Original Equipment (OE) applications, ensuring compatibility and reliable performance.
  • V-Groove Tip Design: The unique V-Groove tip design of the TR55-1 model enhances ignitability and overall engine performance.
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Autolite – Copper Resistor Spark Plug: Quick Starts & Enhanced Durability (Part No.5143)

Copper Resistor Spark Plug: Quick Starts & Enhanced Durability

from

$2.99
Autolite Copper spark plugs are expertly crafted to ensure reliable performance and long-lasting durability for your vehicle. Featuring a copper core center electrode, these spark plugs excel in thermal control and resist fouling, ensuring consistent operation. The high nickel alloy center and ground electrodes are designed for extended life, while the long projection center electrode enhances ignition efficiency. Built with a high alumina multi-rib ceramic insulator, these plugs offer superior thermal conductivity and insulation, boosting strength and reliability. The nickel-plated shell resists corrosion, making it ideal for extended use in demanding conditions. With a tapered seat type and integrated resistor, these spark plugs are engineered to meet the needs of regular-grade applications, delivering quick starts and the power your engine demands.

Product Features:
  • The copper core center electrode aids in thermal control and improves resistance to fouling.
  • Its specially engineered high nickel alloy center and ground electrode provides extended life.
  • The high alumina multi-rib ceramic insulator provides thermal conductivity and superior insulation for increased strength.
  • Designed with a nickel-plated shell that is corrosion resistant to provide increased durability for extended periods.
  • The integrated resistor minimizes electrical interference, ensuring smoother engine performance and reliable operation.
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Motorcraft – Platinum Spark Plug (AGSF32FM): Enhanced Durability & Reliability (Part No.SP-432)

Platinum Spark Plug (AGSF32FM): Enhanced Durability & Reliability

from

$6.99
Platinum Spark Plug (AGSF32FM) offers enhanced durability and reliability, making it the ideal choice for maintaining peak performance in Ford, Lincoln, and Mercury vehicles. Engineered to meet strict Ford standards, these spark plugs are crafted with platinum center and ground electrode tips for superior resistance to oxidation and arc erosion. Designed for exact fitment, they help eliminate misfires, reduce fuel consumption, and optimize emissions, ensuring smooth and efficient engine operation. The multi-rib insulator provides added protection against misfires, while service intervals of up to 100,000 miles deliver long-lasting value. Backed by Motorcraft’s Service Parts Warranty, these spark plugs are built with high-quality materials to provide reliable performance across a wide range of domestic and import applications. Whether you’re replacing original equipment or upgrading, Motorcraft Spark Plugs are the trusted solution to prevent false check engine lights and maintain your vehicle’s reliability.

Product Features:
  • Motorcraft spark plugs are matched to specific engines to provide enhanced durability, eliminate misfires, reduce fuel consumption and optimize emissions.
  • Backed by Motorcraft’s Service Parts Warranty
  • Exact fit for Ford, Lincoln and Mercury vehicles
  • Resistant to oxidation and arc erosion.
  • Multi-rib insulator protects against misfire.
  • Service intervals of up to 100,000 miles.
  • Motorcraft Spark Plugs are designed with high quality materials to provide reliable performance for almost any application.
  • Motorcraft Spark Plugs are what was in the vehicle when it was manufactured
  • Motorcraft ignition components help prevent false check engine lights.
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DENSO – Iridium Power Spark Plug: Maximum Spark Energy, 0.4mm Iridium Tip, IT16 (Part No.5325)

Iridium Power Spark Plug: Maximum Spark Energy, 0.4mm Iridium Tip, IT16

from

$9.99
The Iridium Power Spark Plug features the world’s smallest Iridium Center Electrode at just 0.4mm, delivering unmatched spark precision for maximum combustion efficiency. Engineered with a patented 360-degree laser welding assembly process, this spark plug ensures exceptional durability and reliability under extreme conditions. Its U-groove and taper-cut ground electrode design optimizes flame propagation, enhancing engine performance and fuel efficiency. Built to withstand temperatures exceeding 4000 Deg F, it is burnished with nickel plating for superior high-temperature endurance and corrosion resistance. Designed for versatility, it offers a wide range of part numbers to fit thousands of applications, including classic and collector cars. With its Iridium tip and tapered seat type, this spark plug is the ultimate choice for drivers seeking maximum spark energy, durability, and long-lasting performance.

Product Features:
  • World’s smallest Iridium Center Electrode (0.4mm) for improved spark for maximum combustion
  • Patented 360-degree laser welding assembly process
  • U-groove and taper cut ground electrode to maximize flame propagation.
  • Withstands temperatures greater than 4000 degree Fahrenheit
  • Burnished nickel plating for high temperature endurance and superior corrosion resistance
  • Wide range of part numbers for thousands of applications, including classic and collector cars
  • Iridium Power
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Accel – Spark Plug: Ford Late V8 3-V, 1 Range Colder, 8 Pack (Part No.8161C1)

Spark Plug: Ford Late V8 3-V, 1 Range Colder, 8 Pack

from

$166.99
ACCEL HP Spark Plugs are made with a Copper core which is a better conductor than Platinum and Iridium. They deliver a stronger spark especially in high performance applications where high combustion pressures are present. Copper is much better at dissipating heat than other materials which lessens the chance of a misfire. ACCEL HP Spark Plugs are capable allowing you to open the gap exposing a larger flame kernel or close it if needed for high boost applications. All ACCEL HP Spark Plugs have machine rolled threads allowing for a more precise thread engagement and torque retention.

Product Features:
  • The Copper core is a better conductor than Iridium or Platinum plugs
  • Copper dissipates heat much better than other materials
  • C – Cut Design un-shrouds the spark kernel for a better burn
  • Unlike Iridium or Platinum plugs, the ACCEL HP plugs are capable
  • Machine rolled threads for precise thread engagement
  • One step colder than stock
  • Whether using on the street or on the strip, ACCEL HP Copper Core spark plugs deliver.
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Autolite – Double Platinum Spark Plug: Enhanced Durability & Performance (Part No.APP104)

Double Platinum Spark Plug: Enhanced Durability & Performance

from

$6.99
Double Platinum Spark Plug: Enhanced Durability & Performance is engineered for exceptional reliability and efficiency, making it a top choice for distributor-less ignition system (DIS) engines. Featuring a platinum-to-platinum design, it minimizes gap erosion and reduces misfires, ensuring consistent performance and extended service life. The yttrium-enhanced ground electrode offers superior heat transfer, allowing the spark plug to withstand high temperatures and pressures for greater durability. Its high alumina ceramic insulator optimizes thermal conductivity and dielectric strength, while the multi-rib insulator prevents flash-over for added safety and reliability. With a mid-projection center electrode and tapered seat type, this performance-grade spark plug delivers precision and compatibility. Both the center and ground electrode tips are crafted from platinum, ensuring long-lasting efficiency and superior ignition performance. Designed to outperform copper and standard platinum plugs, this spark plug is a durable and high-value solution for maintaining peak engine performance.

Product Features:
  • Engineered with a platinum-to-platinum design that prevents gap erosion, extending the life of the spark plug.
  • The yttrium-Enhanced Ground Electrode delivers superior heat transfer that delivers more durability under high temps and pressure for greater life.
  • Its high alumina ceramic insulator provides optimum thermal conductivity and dielectric strength.
  • The multi-rib insulator prevents flash-over.
  • Designed with a mid-projection center electrode and tapered seat type for enhanced precision and compatibility with distributor-less ignition system (DIS) engines.
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Autolite – Double Platinum Spark Plug (APP5143): Enhanced Durability & Performance (Part No.APP5143)

Double Platinum Spark Plug (APP5143): Enhanced Durability & Performance

from

$6.99
Autolite Double Platinum spark plugs are engineered for exceptional durability and performance, featuring a platinum-to-platinum design that minimizes gap erosion and reduces misfires for a longer service life. Ideal for distributor-less ignition system (DIS) engines, these spark plugs outperform copper and standard platinum plugs. The yttrium-enhanced ground electrode ensures superior heat transfer, maintaining durability under high temperatures and pressure, while the high alumina ceramic insulator optimizes thermal conductivity and dielectric strength. A multi-rib insulator prevents flash-over, ensuring reliable ignition performance. With a long projection center electrode and tapered seat type, these spark plugs are designed for precision and efficiency. Proudly engineered in the USA with over 100 years of expertise and a proven track record of over 11 billion plugs sold, Autolite continues to set the benchmark in spark plug technology. Whether you’re seeking enhanced durability or superior ignition performance, these spark plugs deliver unmatched value and reliability.

Product Features:
  • Engineered with a platinum-to-platinum design that prevents gap erosion, extending the life of the spark plug.
  • The yttrium-Enhanced Ground Electrode delivers superior heat transfer that delivers more durability under high temps and pressure for greater life.
  • Its high alumina ceramic insulator provides optimum thermal conductivity and dielectric strength.
  • The multi-rib insulator prevents flash-over.
  • Engineered in the USA: Designed and engineered with over 100 years of expertise, ensuring high-quality and reliable performance.
  • Proven Track Record: With more than 11 billion plugs sold, Autolite continues to set the standard in spark plug technology.
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Autolite – Platinum Spark Plug (AP103): Improved Performance & Durability (Part No.AP103)

Platinum Spark Plug (AP103): Improved Performance & Durability

from

$4.99
Autolite Platinum spark plugs are crafted for superior performance and durability, making them ideal for older engine applications. Featuring a platinum center electrode firing tip, these spark plugs ensure quicker firing, smoother starts, enhanced acceleration, and improved fuel efficiency. The platinum firing tip prevents gap erosion, extending the service life, while the high alumina ceramic insulator offers excellent thermal conductivity and insulation for added strength. A multi-rib insulator design prevents flash-over, ensuring reliable operation, and the nickel-plated shell resists corrosion for long-lasting durability. With a mid-projection standard center electrode and a tapered seat type, these performance-grade spark plugs deliver consistent results. The combination of platinum and nickel materials in the electrode tips further enhances reliability, making them a trusted choice for maintaining engine efficiency and longevity.

Product Features:
  • Engineered with a platinum firing tip that prevents gap erosion for longer service life.
  • Its high alumina ceramic insulator provides thermal conductivity and superior insulation for increased strength.
  • The multi-rib insulator prevents flash-over.
  • Designed with a nickel-plated shell that is corrosion resistant to provide increased durability for extended life.
  • Incorporates a mid-projection center electrode design to deliver consistent and reliable performance.
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Most Popular Spark Plugs for 1999 Mercury Mountaineers

Enhance your 1999 Mercury Mountaineer with one of the 37 Spark Plugs we have in stock, starting at just $2.99.

Autolite – Copper Resistor Spark Plug: Quick Starts & Reliable Performance (Part No.104)

Copper Resistor Spark Plug: Quick Starts & Reliable Performance

from

$4.29
Autolite Copper spark plugs are designed to provide reliable performance and quick starts, ensuring your vehicle meets its power and efficiency demands. Featuring a copper core center electrode, these spark plugs excel in thermal control and resist fouling, making them a dependable choice for consistent ignition. The high nickel alloy center and ground electrodes enhance durability, offering an extended lifespan even under demanding conditions. With a high alumina multi-rib ceramic insulator, these plugs deliver superior thermal conductivity and insulation, boosting strength and reliability. The nickel-plated shell resists corrosion, ensuring long-lasting performance. Designed with a standard center electrode and mid-projection for optimal spark delivery, these spark plugs are built to meet regular-grade requirements. The tapered seat design and integrated resistor further enhance functionality, making them a versatile and durable option for a wide range of applications.

Product Features:
  • The copper core center electrode aids in thermal control and improves resistance to fouling.
  • Its specially engineered high nickel alloy center and ground electrode provides extended life.
  • The high alumina multi-rib ceramic insulator provides thermal conductivity and superior insulation for increased strength.
  • Designed with a nickel-plated shell that is corrosion resistant to provide increased durability for extended periods.
  • The integrated resistor minimizes electrical interference, ensuring consistent and reliable ignition performance.
See More

Motorcraft – Platinum Spark Plug (AGSF32FM): Enhanced Durability & Reliability (Part No.SP-432)

Platinum Spark Plug (AGSF32FM): Enhanced Durability & Reliability

from

$6.99
Platinum Spark Plug (AGSF32FM) offers enhanced durability and reliability, making it the ideal choice for maintaining peak performance in Ford, Lincoln, and Mercury vehicles. Engineered to meet strict Ford standards, these spark plugs are crafted with platinum center and ground electrode tips for superior resistance to oxidation and arc erosion. Designed for exact fitment, they help eliminate misfires, reduce fuel consumption, and optimize emissions, ensuring smooth and efficient engine operation. The multi-rib insulator provides added protection against misfires, while service intervals of up to 100,000 miles deliver long-lasting value. Backed by Motorcraft’s Service Parts Warranty, these spark plugs are built with high-quality materials to provide reliable performance across a wide range of domestic and import applications. Whether you’re replacing original equipment or upgrading, Motorcraft Spark Plugs are the trusted solution to prevent false check engine lights and maintain your vehicle’s reliability.

Product Features:
  • Motorcraft spark plugs are matched to specific engines to provide enhanced durability, eliminate misfires, reduce fuel consumption and optimize emissions.
  • Backed by Motorcraft’s Service Parts Warranty
  • Exact fit for Ford, Lincoln and Mercury vehicles
  • Resistant to oxidation and arc erosion.
  • Multi-rib insulator protects against misfire.
  • Service intervals of up to 100,000 miles.
  • Motorcraft Spark Plugs are designed with high quality materials to provide reliable performance for almost any application.
  • Motorcraft Spark Plugs are what was in the vehicle when it was manufactured
  • Motorcraft ignition components help prevent false check engine lights.
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NGK – Iridium IX Spark Plug (TR55IX): Outstanding Acceleration & Durability (Part No.7164)

Iridium IX Spark Plug (TR55IX): Outstanding Acceleration & Durability

from

$14.99
NGK Iridium IX spark plugs are specifically designed for the performance enthusiast. Iridium IX provides outstanding acceleration, high fuel efficiency and durability. NGK Iridium IX plugs offer extreme ignitability and exceptional anti-fouling. Tapered c

Product Features:
  • SINGLE IRIDIUM TIP: Fine wire 0.6 millimeter iridium tip center electrode ensures high durability and a consistently stable spark
  • IRIDIUM ALLOY CENTER ELECTRODE: Iridium’s density (6x that of platinum) and extremely high melting point is perfect for modern high efficiency engines
  • TAPERED CUT GROUND ELECTRODE: Reduced quenching design produces outstanding ignitability, improved acceleration, fuel efficiency and durability
  • SOLID COPPER CORE: 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges
  • TRIVALENT METAL PLATING: Delivers superior anti-corrosion and anti-seizing properties, ensuring ease of installation and removal
  • RECOMMENDED USAGE: Modified or high performance applications, or as an upgrade to OE nickel alloy spark plugs
See More

Autolite – Double Platinum Spark Plug: Enhanced Durability & Performance (Part No.APP104)

Double Platinum Spark Plug: Enhanced Durability & Performance

from

$6.99
Double Platinum Spark Plug: Enhanced Durability & Performance is engineered for exceptional reliability and efficiency, making it a top choice for distributor-less ignition system (DIS) engines. Featuring a platinum-to-platinum design, it minimizes gap erosion and reduces misfires, ensuring consistent performance and extended service life. The yttrium-enhanced ground electrode offers superior heat transfer, allowing the spark plug to withstand high temperatures and pressures for greater durability. Its high alumina ceramic insulator optimizes thermal conductivity and dielectric strength, while the multi-rib insulator prevents flash-over for added safety and reliability. With a mid-projection center electrode and tapered seat type, this performance-grade spark plug delivers precision and compatibility. Both the center and ground electrode tips are crafted from platinum, ensuring long-lasting efficiency and superior ignition performance. Designed to outperform copper and standard platinum plugs, this spark plug is a durable and high-value solution for maintaining peak engine performance.

Product Features:
  • Engineered with a platinum-to-platinum design that prevents gap erosion, extending the life of the spark plug.
  • The yttrium-Enhanced Ground Electrode delivers superior heat transfer that delivers more durability under high temps and pressure for greater life.
  • Its high alumina ceramic insulator provides optimum thermal conductivity and dielectric strength.
  • The multi-rib insulator prevents flash-over.
  • Designed with a mid-projection center electrode and tapered seat type for enhanced precision and compatibility with distributor-less ignition system (DIS) engines.
See More

Autolite – Copper Resistor Spark Plug: Quick Starts & Enhanced Durability (Part No.103)

Copper Resistor Spark Plug: Quick Starts & Enhanced Durability

from

$4.29
Autolite Copper spark plugs are designed to provide reliable performance and durability, making them an excellent choice for maintaining your vehicle’s efficiency. Featuring a copper core center electrode, these spark plugs excel in thermal control and resist fouling, ensuring consistent operation. The high nickel alloy center and ground electrodes are engineered for extended life, while the mid-projection design optimizes spark delivery. A high alumina multi-rib ceramic insulator enhances thermal conductivity and insulation, contributing to superior strength and reliability. The nickel-plated shell resists corrosion, ensuring long-lasting durability even in demanding conditions. With a tapered seat type and integrated resistor, these spark plugs are built to meet performance expectations, delivering quick starts and the power your vehicle needs.

Product Features:
  • The copper core center electrode aids in thermal control and improves resistance to fouling.
  • Its specially engineered high nickel alloy center and ground electrode provides extended life.
  • The high alumina multi-rib ceramic insulator provides thermal conductivity and superior insulation for increased strength.
  • Designed with a nickel-plated shell that is corrosion resistant to provide increased durability for extended periods.
  • The integrated resistor minimizes electrical interference, ensuring smoother engine performance and reliable ignition.
See More

Autolite – Double Platinum Spark Plug: Enhanced Durability & Performance (Part No.APP103)

Double Platinum Spark Plug: Enhanced Durability & Performance

from

$6.99
The Double Platinum Spark Plug is engineered for exceptional durability and performance, making it a top choice for distributor-less ignition system (DIS) engines. Featuring a platinum-to-platinum design, it minimizes gap erosion and reduces misfires, ensuring a longer service life compared to copper and standard platinum plugs. Its yttrium-enhanced ground electrode delivers superior heat transfer, allowing it to withstand high temperatures and pressures for extended durability. The high alumina ceramic insulator optimizes thermal conductivity and dielectric strength, while the multi-rib insulator prevents flash-over for reliable operation. With a mid-projection center electrode and tapered seat type, this performance-grade spark plug is built to deliver consistent ignition and efficiency. Both the center and ground electrode tips are crafted from platinum, ensuring robust functionality and reliability. Designed to meet the demands of modern engines, this spark plug offers outstanding value and long-lasting performance.

Product Features:
  • Engineered with a platinum-to-platinum design that prevents gap erosion, extending the life of the spark plug.
  • The yttrium-Enhanced Ground Electrode delivers superior heat transfer that delivers more durability under high temps and pressure for greater life.
  • Its high alumina ceramic insulator provides optimum thermal conductivity and dielectric strength.
  • The multi-rib insulator prevents flash-over.
  • Designed with a mid-projection center electrode and tapered seat type to ensure consistent ignition and improved engine efficiency.
See More

DENSO – U-Groove Spark Plug: OE Performance, T16EPR-U15 (Part No.5023)

U-Groove Spark Plug: OE Performance, T16EPR-U15

from

$3.49
The U-Groove Spark Plug with its patented U-groove ground electrode design ensures superior ignitability, allowing your engine to fire leaner mixtures for enhanced efficiency and performance. Built with a durable nickel center electrode tip, it delivers long-lasting performance while improving fuel consumption and emission gas purification. Precision machine-rolled threads minimize the risk of seizing or cross-threading, making it ideal for use in delicate aluminum heads. Designed to last twice as long as most conventional plugs, this spark plug is 100% pre-fired to guarantee reliable operation from the start. Its tapered seat type ensures a secure fit, and with a wide range of part numbers available, its compatible with thousands of applications, including classic and collector cars. Whether you’re maintaining a daily driver or restoring a vintage vehicle, this spark plug offers OE performance and exceptional value.

Product Features:
  • Patented U-groove ground electrode design fires leaner mixtures than conventional plugs
  • Precision machine-rolled threads reduce seizing and cross-threading in delicate aluminum heads
  • Wide range of part numbers for thousands of applications, including classic and collector cars
  • Lasts twice as long as most conventional plugs
  • 100 percent pre-fired to assure reliable operation
  • U-Groove Conventional
  • Durable Nickel Center Electrode Tip: Provides long-lasting performance and improved efficiency in emission gas purification and fuel consumption.
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ACDelco – Double Platinum Spark Plug: Long-Lasting Performance & Durability (Part No.41-810)

Double Platinum Spark Plug: Long-Lasting Performance & Durability

from

$10.99
ACDelco Gold (Professional) Double Platinum Spark Plug are a high quality alternative to Original Equipment (OE) parts. With a copper core and double platinum pads on the center electrode, these plugs are designed to deliver long-lasting performance. These premium aftermarket replacement spark plugs are manufactured to meet your expectations for fit, form, and function. ACDelco Gold (Professional) parts are manufactured to meet your expectations for fit, form, and function, making them a smart choice for General Motors vehicles, as well as most makes and models, including special applications. These high-quality parts are backed by General Motors. Some ACDelco Gold parts may have formerly appeared as ACDelco Professional.

Product Features:
  • One-piece, fired-in suppressor seal blends three glass types for a gas-tight seal that helps reduce radio frequency and engine interference, regulate spark plug energy, and protect against compression pressures for long life
  • Double platinum point pad on center and ground electrode offer excellent durability and consistent voltage demands to help reduce wear on ignition system
  • Pure copper core results in cooler electrode temperature for maximized durability and fouling resistance
  • Some ACDelco Gold parts may have formerly appeared as ACDelco Professional
  • Premium aftermarket replacement part
  • Manufactured to meet specifications for fit, form, and function for General Motors vehicles as well as most makes and models
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Champion – Iridium Spark Plug (RS14WYPB5): Maximum Performance & Longevity (Part No.9404)

Iridium Spark Plug (RS14WYPB5): Maximum Performance & Longevity

from

$8.49
Champion Iridium spark plug is engineered for drivers who demand peak performance and durability. Featuring a fine-wire iridium center electrode and a platinum-enhanced ground electrode, this premium spark plug ensures sharper spark focus and greater ignitability, delivering maximum engine efficiency. The V-trimmed ground electrode design promotes consistent performance, while the Heat-Active alloy allows the electrodes to quickly reach and maintain optimal operating temperatures under all engine loads. Built with a tapered seat type and resistor technology, it provides reliable performance and compatibility with a wide range of vehicles. Designed for longevity, the iridium center electrode ensures extended service life, making it a perfect choice for those seeking high-grade, performance-oriented spark plugs.

Product Features:
  • Champion Iridium – Maximum Performance. Premium Spark Plug
  • Iridium center electrode delivers maximum life
  • Fine-wire center electrode and V-trimmed for greater ignitability
  • V-trimmed ground electrode promotes sharper spark focus
  • Maintains stable operating temperature under all engine loads
  • Heat-Active alloy allows electrodes to reach optimal temperature quickly
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Autolite – Copper Resistor Spark Plug: Smooth Acceleration & Enhanced Durability (Part No.764)

Copper Resistor Spark Plug: Smooth Acceleration & Enhanced Durability

from

$2.99
Autolite Copper spark plugs are crafted to deliver reliable performance and meet your vehicle’s demands with precision. Featuring a copper core center electrode, these spark plugs excel in thermal control and resist fouling, ensuring consistent operation. The high nickel alloy center and ground electrodes are engineered for extended life, while the nickel-plated shell offers superior corrosion resistance for long-lasting durability. With a high alumina multi-rib ceramic insulator, these spark plugs provide excellent thermal conductivity and insulation, enhancing strength and reliability. Designed for smooth acceleration, they elevate your driving experience while promoting good fuel economy for greater efficiency. The tapered seat type ensures an optimal fit and performance, while the mid-projection standard center electrode design and nickel tip materials further enhance functionality. Perfect for regular-grade applications, these spark plugs combine durability, efficiency, and smooth operation to keep your vehicle running at its best.

Product Features:
  • The copper core center electrode aids in thermal control and improves resistance to fouling.
  • Its specially engineered high nickel alloy center and ground electrode provides extended life.
  • The high alumina multi-rib ceramic insulator provides thermal conductivity and superior insulation for increased strength.
  • Designed with a nickel-plated shell that is corrosion resistant to provide increased durability for extended periods.
  • Smooth Acceleration: Designed to provide smooth acceleration, enhancing your driving experience.
  • Good Fuel Economy: These spark plugs help in maintaining good fuel economy, making your vehicle more efficient.
  • Tapered Seat Type: Features a tapered seat type for optimal fit and performance.
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NGK – V-Power Nickel Spark Plug (TR55): Enhanced Ignitability & Performance (Part No.3951)

V-Power Nickel Spark Plug (TR55): Enhanced Ignitability & Performance

from

$7.49
NGK V-Power spark plugs offer reliable performance and improved ignitability over standard nickel plugs. Engineered specifically for OE applications, the special V-cut nickel alloy center electrode and concave ground electrode of NGK’s V-Power spark plug increases ignitability providing quicker starts and smoother idle. NGK’s legendary high grade alumina silicate ceramic creates a stronger insulator for optimal dielectric performance. Trivalent metal plating ensures superior anti-corrosion and anti-seizing properties.

Product Features:
  • ACTUAL OE or EQUIVALENT DESIGN: OEM quality construction nickel alloy center electrode with V-groove provides consistent performance
  • RECOMMENDED USAGE: Best for vehicles with OE nickel alloy plugs, not recommended on vehicles with factory precious metal plugs
  • NGK’s OE CERAMIC TECHNOLOGY: High grade alumina silicate ceramic creates a stronger insulator for optimal dielectric performance
  • SOLID COPPER CORE: 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges
  • COLD-ROLLED THREADS: Prevents cross-threading and damage to cylinder heads
  • TRIVALENT METAL PLATING: Delivers superior anti-corrosion and anti-seizing properties, ensuring ease of installation and removal
  • Enhanced Ignitability: The V-cut nickel alloy center electrode and concave ground electrode design of NGK V-Power spark plugs provide quicker starts and smoother idle.
  • OE Application Specific: Engineered specifically for Original Equipment (OE) applications, ensuring compatibility and reliable performance.
  • V-Groove Tip Design: The unique V-Groove tip design of the TR55 model enhances ignitability and overall engine performance.
  • Lower Emissions: The NGK Laser Platinum Spark Plug contributes to lower emissions, supporting a cleaner and more environmentally friendly driving experience.
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NGK – G-Power Platinum Spark Plug (TR55GP): Enhanced Durability & Efficiency (Part No.3403)

G-Power Platinum Spark Plug (TR55GP): Enhanced Durability & Efficiency

from

$8.49
NGK G-Power Platinum spark plugs are the best single platinum spark plugs at an economical price. G-Power plugs feature a fine wire platinum center electrode and a trapezoidal cut ground electrode that offers increased durability, improved fuel efficiency, lower emissions, faster starts and quicker acceleration over conventional nickel spark plugs. An excellent upgrade for vehicles which used nickel alloy spark plugs originally. For better performance consider upgrading to a NGK Iridium IX plug. For even greater performance consider upgrading to a NGK RUTHENIUM HX plug.

Product Features:
  • SINGLE PLATINUM TIP: Fine wire 0.6 millimeter platinum tip center electrode ensures improved durability and a consistently stable spark
  • PLATINUM ALLOY: G-Power platinum provides exceptional value with increased performance and longer service intervals than factory nickel plugs
  • TRAPEZOIDAL CUT GROUND ELECTRODE: Reduces quenching design produces improved ignitability and performance
  • SOLID COPPER CORE: 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges
  • COLD-ROLLED THREADS: Prevents cross-threading and damage to cylinder heads
  • RECOMMENDED USAGE: Lower cost alternative to double precious metal spark plugs or as an upgrade to OE nickel alloy spark plugs
  • Improved Fuel Efficiency: Designed to offer better fuel efficiency, the NGK G-Power Platinum spark plugs help you save on fuel costs.
  • Lower Emissions: These spark plugs contribute to lower emissions, making them an environmentally friendly choice.
  • Faster Starts and Quicker Acceleration: Experience faster starts and quicker acceleration with the advanced design of the NGK G-Power Platinum spark plugs.
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Autolite – Platinum Spark Plug: Enhanced Durability & Fuel Efficiency (Part No.AP104)

Platinum Spark Plug: Enhanced Durability & Fuel Efficiency

from

$4.99
Autolite Platinum spark plugs are crafted for exceptional performance and durability, making them ideal for older engine applications. Featuring a platinum center electrode firing tip, these spark plugs ensure quicker firing, smoother starts, and enhanced acceleration while boosting fuel efficiency. The platinum firing tip prevents gap erosion, extending the service life, while the high alumina ceramic insulator offers superior thermal conductivity and insulation for added strength. A multi-rib insulator design prevents flash-over, ensuring reliable operation, and the nickel-plated shell resists corrosion for long-lasting durability. With a mid-projection standard center electrode and a tapered seat type, these performance-grade spark plugs deliver consistent results. The combination of platinum and nickel materials in the electrode tips further enhances reliability, making them a smart choice for drivers seeking improved engine efficiency and extended part longevity.

Product Features:
  • Engineered with a platinum firing tip that prevents gap erosion for longer service life.
  • Its high alumina ceramic insulator provides thermal conductivity and superior insulation for increased strength.
  • The multi-rib insulator prevents flash-over.
  • Designed with a nickel-plated shell that is corrosion resistant to provide increased durability for extended life.
  • Incorporates a mid-projection standard center electrode design to ensure consistent performance and reliable ignition in a variety of engine conditions.
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Autolite – Platinum Spark Plug (AP103): Improved Performance & Durability (Part No.AP103)

Platinum Spark Plug (AP103): Improved Performance & Durability

from

$4.99
Autolite Platinum spark plugs are crafted for superior performance and durability, making them ideal for older engine applications. Featuring a platinum center electrode firing tip, these spark plugs ensure quicker firing, smoother starts, enhanced acceleration, and improved fuel efficiency. The platinum firing tip prevents gap erosion, extending the service life, while the high alumina ceramic insulator offers excellent thermal conductivity and insulation for added strength. A multi-rib insulator design prevents flash-over, ensuring reliable operation, and the nickel-plated shell resists corrosion for long-lasting durability. With a mid-projection standard center electrode and a tapered seat type, these performance-grade spark plugs deliver consistent results. The combination of platinum and nickel materials in the electrode tips further enhances reliability, making them a trusted choice for maintaining engine efficiency and longevity.

Product Features:
  • Engineered with a platinum firing tip that prevents gap erosion for longer service life.
  • Its high alumina ceramic insulator provides thermal conductivity and superior insulation for increased strength.
  • The multi-rib insulator prevents flash-over.
  • Designed with a nickel-plated shell that is corrosion resistant to provide increased durability for extended life.
  • Incorporates a mid-projection center electrode design to deliver consistent and reliable performance.
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DENSO – Iridium TT Spark Plug: Ultimate Endurance and Power, 0.4mm Iridium Tip, IT16TT (Part No.4713)

Iridium TT Spark Plug: Ultimate Endurance and Power, 0.4mm Iridium Tip, IT16TT

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$13.99
The Iridium TT Spark Plug combines the durability of an OE-style plug with the power and torque of high-performance engineering, making it a standout choice for drivers seeking reliability and efficiency. Featuring a 0.4mm Iridium center electrode – the world’s smallest diameter – it maximizes firing potential, while the 0.7mm needle tip ground electrode promotes higher spark energy and minimizes heat quenching. Built with DENSO’s patented Iridium-Rhodium alloy formula, it boasts the highest concentration of Iridium for unmatched durability, withstanding temperatures over 4000 Deg F. The advanced Twin-Tip Technology pairs a fine wire Iridium center electrode with a needle tip Platinum ground electrode, ensuring superior ignition and fuel efficiency. Designed to enhance fuel economy and reduce emissions, this spark plug allows you to drive farther with fewer stops. Developed to original equipment specifications and utilizing a 360-degree laser welding process, it guarantees exceptional structural strength and consistent performance. Perfect for those who demand endurance and power in every drive.

Product Features:
  • 0.4mm Iridium Center Electrode: World’s Smallest Diameter that maximizes firing potential
  • 0.7mm Needle Tip Ground Electrode: Promotes higher spark energy and less heat quenching
  • DENSO Patented Optimized Iridium-Rhodium Alloy Formula: Highest concentration of Iridium vs. competitors for greater durability
  • DENSO Patented 360 degree laser welding process: Ensuring exceptional quality bond and structural strength with the Iridium Center Electrode
  • Durability of an OE style plug combined with Power and Torque of high performance.
  • Withstands temperatures greater than 4000 degree Fahrenheit
  • Iridium TT
  • Advanced Twin-Tip Technology: Combines a Fine Wire Iridium Center Electrode with a Needle Tip Platinum Ground Electrode for superior ignition and efficiency.
  • Enhanced Fuel Economy and Lower Emissions: Designed to provide better fuel economy and reduced emissions, allowing you to drive around the Earth over 4 times.
  • Original Equipment Specification: Developed from the Super Ignition Plug (SIP) design, ensuring reliable and consistent performance.
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ACDelco – Copper Core Spark Plug: Reliable Performance & OE Replacement (Part No.R42LTS)

Copper Core Spark Plug: Reliable Performance & OE Replacement

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$6.29
ACDelco GM Original Equipment Conventional Spark Plugs are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These Conventional Spark Plugs are designed for reliability and efficient performance, and are a high quality replacement for many vehicles on the road today. Their high-quality copper cores and outstanding suppression characteristics deliver reliable performance. They are also available for Marine applications. These premium aftermarket replacement spark plugs are manufactured to meet your expectations for fit, form, and function. ACDelco GM Original Equipment parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some ACDelco GM Original Equipment parts may have formerly appeared as GM Genuine Parts (OE) or ACDelco Professional.

Product Features:
  • GM regularly updates production and service part designs to integrate new materials and technologies
  • Designed with a high-quality copper core for enhanced conductivity and heat control, ensuring optimal engine performance.
  • Outstanding suppression characteristics minimize radio frequency interference, providing a smoother driving experience.
  • Suitable for both automotive and marine applications, offering versatile performance solutions.
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DENSO – Iridium Power Spark Plug: Maximum Spark Energy, 0.4mm Iridium Tip, IT16 (Part No.5325)

Iridium Power Spark Plug: Maximum Spark Energy, 0.4mm Iridium Tip, IT16

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$9.99
The Iridium Power Spark Plug features the world’s smallest Iridium Center Electrode at just 0.4mm, delivering unmatched spark precision for maximum combustion efficiency. Engineered with a patented 360-degree laser welding assembly process, this spark plug ensures exceptional durability and reliability under extreme conditions. Its U-groove and taper-cut ground electrode design optimizes flame propagation, enhancing engine performance and fuel efficiency. Built to withstand temperatures exceeding 4000 Deg F, it is burnished with nickel plating for superior high-temperature endurance and corrosion resistance. Designed for versatility, it offers a wide range of part numbers to fit thousands of applications, including classic and collector cars. With its Iridium tip and tapered seat type, this spark plug is the ultimate choice for drivers seeking maximum spark energy, durability, and long-lasting performance.

Product Features:
  • World’s smallest Iridium Center Electrode (0.4mm) for improved spark for maximum combustion
  • Patented 360-degree laser welding assembly process
  • U-groove and taper cut ground electrode to maximize flame propagation.
  • Withstands temperatures greater than 4000 degree Fahrenheit
  • Burnished nickel plating for high temperature endurance and superior corrosion resistance
  • Wide range of part numbers for thousands of applications, including classic and collector cars
  • Iridium Power
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Champion – Copper Plus Spark Plug (RS12YC): Dependable Performance & Durability (Part No.401)

Copper Plus Spark Plug (RS12YC): Dependable Performance & Durability

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$2.99
The Copper Plus Spark Plug delivers dependable performance and durability, making it a reliable choice for maintaining optimal engine function. Featuring a copper core center electrode, it ensures enhanced conductivity and precise heat control, promoting good overall wear and extending the spark plug’s lifespan. Built to ISO and SAE Standards, this spark plug guarantees proven performance and superior corrosion resistance, even in demanding conditions. Its nickel center electrode tip and tapered seat design further enhance reliability and engine efficiency, making it an excellent standard replacement option. With a resistor type design and robust materials, this spark plug is engineered to provide consistent ignition and long-lasting durability, ensuring your vehicle runs smoothly mile after mile.

Product Features:
  • Copper Plus – Dependable Performance and Durability
  • Copper core center electrode allows for accurate control of heat range for longer life
  • Superior corrosion resistance
  • Built to ISO and SAE standards for proven performance
  • Built to ISO and SAE standards for proven performance
  • Enhanced Conductivity and Heat Control: The Champion Copper Plus Spark Plug features a copper core electrode that provides increased conductivity and heat control, ensuring good overall wear and extending the spark plug’s life.
  • Reliable Nickel Center Electrode Tip: Featuring a nickel center electrode tip and a tapered seat type, this spark plug enhances reliability and ensures optimal engine performance.
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Champion – Copper Plus Spark Plug (RS14YC6): Dependable Performance & Durability (Part No.13)

Copper Plus Spark Plug (RS14YC6): Dependable Performance & Durability

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$2.99
The Copper Plus spark plug is engineered for dependable performance and durability, making it an ideal choice for maintaining engine efficiency. Featuring a copper core center electrode, it ensures accurate heat range control for extended lifespan and consistent wear. Its nickel center electrode tip enhances durability and reliability, while the tapered seat type design guarantees a secure fit and optimal performance. Built to ISO and SAE Standards, this spark plug offers proven performance and superior corrosion resistance, ensuring long-term reliability. As an OE replacement, it delivers the quality and functionality needed to keep your vehicle running smoothly. Whether you’re seeking improved conductivity or heat control, this standard-grade replacement spark plug is designed to meet your engine’s demands with precision and efficiency.

Product Features:
  • Copper Plus – Dependable Performance and Durability
  • Copper core center electrode allows for accurate control of heat range for longer life
  • Superior corrosion resistance
  • Built to ISO and SAE standards for proven performance
  • Built to ISO and SAE standards for proven performance
  • Nickel Center Electrode Tip: Equipped with a nickel center electrode tip, this spark plug offers superior durability and reliable performance, making it a dependable choice for maintaining engine efficiency.
  • Tapered Seat Type: The tapered seat type design of the Champion Copper Plus Spark Plug ensures a secure fit and optimal performance, contributing to the overall reliability of your engine.
  • OE Replacement: Designed as an OE replacement, the Champion Copper Plus Spark Plug guarantees dependable performance and durability, making it an ideal choice for maintaining your vehicle’s engine.
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DENSO – Double Platinum Spark Plug: OE Performance, lasts 60K+ Miles, PT16EPR-L13 (Part No.5070)

Double Platinum Spark Plug: OE Performance, lasts 60K+ Miles, PT16EPR-L13

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$11.99
Double Platinum Spark Plug PT16EPR-L13 is engineered to meet the highest OE standards for performance, durability, and emissions. Featuring OE-grade platinum on both center and ground electrodes, it ensures superior thermal conductivity and sustained spark performance for over 60,000 miles. The premium shell construction with machine-rolled threads enhances durability and provides a secure fit, while the tapered seat type ensures optimal compatibility with your engine. Designed to reduce secondary required voltage and increase ignition efficiency, this spark plug delivers reliable performance and helps minimize shop comebacks, ensuring customer satisfaction. With its double platinum design, it offers exceptional longevity and consistent ignition, making it a valuable addition to your vehicle’s ignition system.

Product Features:
  • OE grade platinum on both center and ground electrodes
  • Premium shell construction with machine-rolled threads
  • Superior thermal conductivity
  • Sustained spark performance over 60,000 miles
  • Reduced secondary required voltage, increased ignition efficiency
  • Satisfied customers, reduced shop comebacks
  • Double Platinum
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Champion – Platinum Power Spark Plug (RS14PYC6): Powerful Performance & Durability (Part No.3013)

Platinum Power Spark Plug (RS14PYC6): Powerful Performance & Durability

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$4.99
Champion Platinum Power spark plugs are engineered for exceptional performance and durability, making them an ideal choice for maintaining peak engine efficiency. Featuring a platinum center electrode, these spark plugs ensure long-lasting reliability and consistent performance. The fine-wire center electrode enhances ignitability, while the V-trimmed ground electrode sharpens spark focus for optimal combustion. Constructed with Heat-Active alloy, the electrodes quickly reach and maintain the ideal operating temperature, ensuring smooth engine operation under various conditions. The platinum-tipped center wire resists wear and helps maintain the proper gap specification throughout the life of the plug, reducing the need for frequent replacements. Designed as a standard replacement with a tapered seat type, these spark plugs are built to meet or exceed OEM Standards. With a nickel ground electrode tip and integrated resistor, they deliver dependable performance and value, making them a smart investment for your vehicle’s ignition system.

Product Features:
  • Platinum Power- Premium Spark Plug. Powerful Performance.
  • Platinum center electrode for long life
  • Fine-wire center electrode for greater ignitability
  • V-trimmed ground electrode promotes sharper spark focus
  • Heat-Active alloy allows electrodes to reach optimal temperature
  • Platinum tipped center wire resists wear and helps to maintain proper gap spec over life of the plug
  • Platinum Center Electrode: Features a platinum center electrode for extended durability and long life.
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Champion – Double Platinum Power Spark Plug (RS14PYPB5): Enhanced Ignitability & Durability (Part No.7940)

Double Platinum Power Spark Plug (RS14PYPB5): Enhanced Ignitability & Durability

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$6.99
Champion Double Platinum Power spark plugs are engineered for drivers seeking enhanced performance and durability. Featuring a fine-wire platinum center electrode and a platinum pad ground electrode, these spark plugs deliver exceptional wear resistance and sharper spark focus for reliable ignition. The V-trimmed ground electrode ensures precise spark delivery, while the exclusive Heat-Active alloy maintains optimal operating temperatures under all engine loads, ensuring consistent performance. Designed as an OE replacement, these spark plugs guarantee compatibility and dependable operation for your vehicle. With their advanced double platinum construction, they provide greater ignitability, improved fuel efficiency, and a longer lifespan, making them a premium choice for maintaining peak engine performance.

Product Features:
  • Double Platinum Power – Premium Spark Plug. More Powerful Performance.
  • Platinum center and ground electrode for greater wear resistance
  • Maintains stable operating temperature under all engine loads
  • Fine-wire center electrode for greater ignitability
  • V-trimmed ground electrode promotes sharper spark focus
  • Heat-Active alloy allows electrodes to reach optimal temperature
  • OE Replacement: Designed as an original equipment replacement, ensuring compatibility and reliable performance for your vehicle.
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DENSO – Platinum TT Spark Plug – PT16TT (Part No.4511)

Platinum TT Spark Plug - PT16TT

from

$5.99
The Platinum TT Spark Plug with its innovative Twin-Tip design ensures faster flame propagation, promoting more complete combustion for enhanced engine performance and efficiency. Crafted with a durable platinum center electrode tip, this spark plug offers exceptional longevity and consistent performance, making it a reliable choice for your vehicle. Its tapered seat type ensures a secure fit, reducing the risk of gas leakage and optimizing combustion chamber sealing. Designed for precision and durability, this spark plug not only improves ignition efficiency but also contributes to smoother engine operation and potentially better fuel economy. A perfect blend of advanced technology and robust materials, it delivers excellent value for drivers seeking long-lasting performance and reliability.

Product Features:
  • Innovative Twin-Tip design promotes faster flame propagation for more complete combustion, enhancing engine performance and efficiency.
  • Durable platinum center electrode tip ensures exceptional longevity and consistent performance over time.
  • Tapered seat type provides a secure fit, reducing gas leakage and optimizing combustion chamber sealing.
  • Precision-engineered to improve ignition efficiency, contributing to smoother engine operation.
  • Advanced design and robust materials deliver long-lasting performance and reliability for drivers.
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E3 – DiamondFIRE Automotive Spark Plug: More Power & Fuel Efficiency (Part No.E3.62)

DiamondFIRE Automotive Spark Plug: More Power & Fuel Efficiency

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$8.49
The Premium DiamondFire Automotive Spark Plug is engineered to deliver peak performance and efficiency for your vehicle. Featuring E3’s patented Diamond Fire edge-to-edge ground electrode, it ensures a faster, more complete burn for smoother acceleration and idle. The innovative “diamond-shaped” side wire electrode enhances combustion by quickly igniting the air/fuel mixture, resulting in a larger and faster flame kernel. This translates to improved power output by up to 6% on average and greater fuel efficiency, reducing engine carbon deposits and saving you money at the pump. Constructed with durable nickel for both the center and ground electrode tips, this spark plug is built to last. Its tapered seat design ensures a secure fit, and the pre-gapped configuration eliminates the need for adjustments, making installation hassle-free. Upgrade to the DiamondFire Spark Plug for cleaner combustion, enhanced engine performance, and long-term reliability.

Product Features:
  • E3’s Diamond Fire edge to edge ground electrode provides maximum performance with increased efficiency and a faster more complete burn
  • Smoother Acceleration & Idle – The faster flame initiated by the spark plug results in a more complete burn of the ingested fuel charge. More pressure is created against the piston more fuel is put to work
  • Energy – Power output improved up to 6% on average in the typical operating ranges. Results will vary.
  • Efficiency – The “diamond shaped” side wire electrode projects the combustion spark in a way that more quickly ignites the air/fuel mixture, thereby creating a significantly faster and larger flame kernel. The result is that more fuel is put to work durin
  • E3’s patented Diamond Fire Technology provides a cleaner burning combustion, which translates into fuel savings and reduced engine carbon deposits
  • The Spark Plugs are pre-gapped at the factory and cannot be adjusted.
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E3 – DiamondFIRE Automotive Spark Plug: More Power & Fuel Efficiency (Part No.E3.53)

DiamondFIRE Automotive Spark Plug: More Power & Fuel Efficiency

from

$8.49
The Premium DiamondFire Automotive Spark Plug is engineered to deliver peak performance and efficiency for your vehicle. Featuring E3’s patented Diamond Fire edge-to-edge ground electrode, it ensures a faster, more complete burn for smoother acceleration and idle. The innovative “diamond-shaped” side wire electrode enhances combustion by quickly igniting the air/fuel mixture, resulting in a larger and faster flame kernel. This translates to improved power output – up to 6% on average – and better fuel efficiency, saving you money while reducing engine carbon deposits. Constructed with durable nickel for both the center and ground electrode tips, this spark plug is built to last. Its tapered seat design ensures a secure fit, and the pre-gapped configuration eliminates the need for adjustments, making installation hassle-free. With its advanced technology, this spark plug not only boosts performance but also promotes cleaner combustion, making it a smart upgrade for any vehicle.

Product Features:
  • E3’s Diamond Fire edge to edge ground electrode provides maximum performance with increased efficiency and a faster more complete burn
  • Smoother Acceleration & Idle – The faster flame initiated by the spark plug results in a more complete burn of the ingested fuel charge. More pressure is created against the piston more fuel is put to work
  • Energy – Power output improved up to 6% on average in the typical operating ranges. Results will vary.
  • Efficiency – The “diamond shaped” side wire electrode projects the combustion spark in a way that more quickly ignites the air/fuel mixture, thereby creating a significantly faster and larger flame kernel. The result is that more fuel is put to work durin
  • E3’s patented Diamond Fire Technology provides a cleaner burning combustion, which translates into fuel savings and reduced engine carbon deposits
  • The Spark Plugs are pre-gapped at the factory and cannot be adjusted.
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Autolite Iridium – Iridium XP Fine wire Spark Plug: Improved Durability, More Focused Ignition (Part No.XP104)

Iridium XP Fine wire Spark Plug: Improved Durability, More Focused Ignition

from

$10.99
Autolite has over 100 years of engineering experience and has sold over 11 billion plugs. Designed and engineered in the USA, the Autolite Iridium XP spark plugs feature an iridium-enhanced 0.6mm finewire design and patented platinum sidewire technology to provide better overall durability and a more focused ignition for enhanced ignitability and performance. Features double Iridium-enhanced alloy technology center electrode for improved durability and wear resistance.

Product Features:
  • 0.6 mm finewire design improves ignitability
  • Patented V-trimmed platinum sidewire technology resists wear
  • OE equivalent design is engineered for every engine
  • Designed for better overall durability with virtually no gap erosion
  • Double Iridium-enhanced alloy technology ensures superior wear resistance for extended plug life.
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Motorcraft – Double Platinum Spark Plug (AGSF22FM): Enhanced Durability & Reliability (Part No.SP-500)

Double Platinum Spark Plug (AGSF22FM): Enhanced Durability & Reliability

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$7.49
Double Platinum Spark Plug (AGSF22FM) offers enhanced durability and reliability, making it the ideal choice for maintaining peak engine performance. Specifically engineered to meet strict Ford standards, these spark plugs are an exact fit for Ford, Lincoln, and Mercury vehicles, ensuring seamless compatibility. Featuring a platinum center electrode tip and nickel ground electrode tip, they resist oxidation and arc erosion for long-lasting performance. The multi-rib insulator design protects against misfires, while the tapered seat type ensures a secure fit. With service intervals of up to 100,000 miles, these spark plugs reduce fuel consumption, optimize emissions, and help prevent false check engine lights. Backed by Motorcraft’s Service Parts Warranty, they deliver the same reliable performance as the original equipment installed during manufacturing. Designed for a broad range of applications, these spark plugs are crafted from high-quality materials to provide confidence and reliability for domestic and import cars and trucks of all sizes.

Product Features:
  • Motorcraft spark plugs are matched to specific engines to provide enhanced durability, eliminate misfires, reduce fuel consumption and optimize emissions.
  • Backed by Motorcraft’s Service Parts Warranty
  • Exact fit for Ford, Lincoln and Mercury vehicles
  • Resistant to oxidation and arc erosion.
  • Multi-rib insulator protects against misfire.
  • Service intervals of up to 100,000 miles.
  • Motorcraft Spark Plugs are designed with high quality materials to provide reliable performance for almost any application.
  • Motorcraft Spark Plugs are what was in the vehicle when it was manufactured
  • Motorcraft ignition components help prevent false check engine lights.
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Autolite Iridium – Iridium XP Fine wire Spark Plug: Improved Durability, More Focused Ignition (Part No.XP103)

Iridium XP Fine wire Spark Plug: Improved Durability, More Focused Ignition

from

$10.99
Autolite has over 100 years of engineering experience and has sold over 11 billion plugs. Designed and engineered in the USA, the Autolite Iridium XP spark plugs feature an iridium-enhanced 0.6mm finewire design and patented platinum sidewire technology to provide better overall durability and a more focused ignition for enhanced ignitability and performance. Features double Iridium-enhanced alloy technology center electrode for improved durability and wear resistance.

Product Features:
  • 0.6 mm finewire design improves ignitability
  • Patented V-trimmed platinum sidewire technology resists wear
  • OE equivalent design is engineered for every engine
  • Designed for better overall durability with virtually no gap erosion
  • Double Iridium-enhanced alloy technology ensures superior wear resistance for extended plug life.
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Motorcraft – Standard Spark Plug: Enhances Durability & Reduces Misfires (Part No.SP-400)

Standard Spark Plug: Enhances Durability & Reduces Misfires

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$5.99
Motorcraft Spark Plugs are original equipment on Ford Motor Company vehicles, engineered to meet strict Ford engineering standards for performance and reliability. These spark plugs are matched to specific engines to provide enhanced durability, eliminate misfires, reduce fuel consumption, and optimize emissions. They are resistant to oxidation and arc erosion, feature a multi-rib insulator to protect against misfire, and have service intervals of up to 100,000 miles. Designed with high-quality nickel materials, they ensure reliable performance for almost any application and help prevent false check engine lights. Backed by Motorcraft’s Service Parts Warranty, these spark plugs are an exact fit for Ford, Lincoln, and Mercury vehicles, delivering the same quality as the original components installed during manufacturing.

Product Features:
  • Motorcraft spark plugs are matched to specific engines to provide enhanced durability, eliminate misfires, reduce fuel consumption and optimize emissions.
  • Backed by Motorcraft’s Service Parts Warranty
  • Exact fit for Ford, Lincoln and Mercury vehicles
  • Resistant to oxidation and arc erosion.
  • Multi-rib insulator protects against misfire.
  • Service intervals of up to 100,000 miles.
  • Motorcraft Spark Plugs are designed with high quality materials to provide reliable performance for almost any application.
  • Motorcraft Spark Plugs are what was in the vehicle when it was manufactured
  • Motorcraft ignition components help prevent false check engine lights.
  • High-Quality Nickel Materials: Constructed with nickel for both the center and ground electrode tips, these spark plugs offer reliable performance and resistance to oxidation and arc erosion.
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ACDelco – RAPIDFIRE Platinum Spark Plug: Reduces Misfires & Enhances Durability (Part No.12)

RAPIDFIRE Platinum Spark Plug: Reduces Misfires & Enhances Durability

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$6.99
ACDelco Gold (Professional) RAPIDFIRE Spark Plugs are a high quality alternative to Original Equipment (OE) parts. These RAPIDFIRE Single Platinum Performance Spark Plugs are designed for everyday use and are a high quality replacement for many vehicles on the road today. These premium aftermarket spark plugs have high-quality suppressors that help prevent misfiring, an improved plug to boot seal, and a pure copper core for greater durability. These premium aftermarket replacement spark plugs are manufactured to meet your expectations for fit, form, and function. ACDelco Gold (Professional) parts are manufactured to meet your expectations for fit, form, and function, making them a smart choice for General Motors vehicles, as well as most makes and models, including special applications. These high-quality parts are backed by General Motors. Some ACDelco Gold parts may have formerly appeared as ACDelco Professional.

Product Features:
  • Solid state suppressor, with two-piece glass and brass seal, can help reduce radio frequency interference, regulates spark energy for long electrode life, and helps protect against high combustion pressures
  • Pure copper core provides great heat transfer and helps maximize plug durability
  • Platinum on center electrode enables superior spark characteristics and can reduce voltage requirements of the ignition system
  • Ribless insulator helps optimize plug to boot seal
  • Some ACDelco Gold parts may have formerly appeared as ACDelco Professional
  • Premium aftermarket replacement part
  • Manufactured to meet specifications for fit, form, and function for General Motors vehicles as well as most makes and models
  • High-Quality Suppressors: Designed to help prevent misfiring, ensuring smooth and reliable engine performance.
  • Improved Plug to Boot Seal: Enhances the connection between the spark plug and the ignition system, reducing the risk of leaks and improving overall efficiency.
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NGK – Laser Iridium Spark Plug (ITR5H13): Fine Wire Tip for Precision (Part No.97287)

Laser Iridium Spark Plug (ITR5H13): Fine Wire Tip for Precision

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$23.99
NGK Laser Iridium spark plugs offer the best combination of performance and longevity. Engineered specifically for OE applications, Laser Iridium spark plugs are tested to the highest standards to ensure quality and durability. Iridium tipped center electrode provides durability six times harder than platinum. NGKs high grade pure alumina ceramic and 98 percent pure copper core prevents the spark plug from overheating while providing reliable starts. Most Laser Iridium spark plugs feature a platinum pad on the ground electrode for even wear in distributorless ignition systems.

Product Features:
  • ACTUAL OE or EQUIVALENT DESIGN: OEM quality construction fine wire iridium alloy center electrode provides consistent performance
  • IRIDIUM ALLOY CENTER ELECTRODE: Iridium’s density (6x that of platinum) and extremely high melting point is perfect for modern high efficiency engines
  • PLATINUM TIP GROUND ELECTRODE: Unless OE specified, platinum protection at the ground electrode provides excellent ignitability and service life
  • SOLID COPPER CORE: 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges
  • TRIVALENT METAL PLATING: Delivers superior anti-corrosion and anti-seizing properties, ensuring ease of installation and removal
  • RECOMMENDED USAGE: Best for vehicles with OE fine wire iridium alloy plugs
  • Superior Durability: The iridium-tipped center electrode is six times harder than platinum, ensuring long-lasting performance.
  • OE Application Specific: Engineered specifically for Original Equipment (OE) applications, ensuring a perfect fit and optimal performance.
  • Even Wear: Features a platinum pad on the ground electrode for even wear, particularly beneficial in distributorless ignition systems.
  • Fine Wire Tip Design: The fine wire tip design of the ITR5H13 model enhances ignition efficiency and performance.
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Champion – Double Platinum Power Spark Plug (RS12PYPB5): Enhanced Durability & Performance (Part No.7963)

Double Platinum Power Spark Plug (RS12PYPB5): Enhanced Durability & Performance

from

$6.99
Champion Double Platinum Power spark plugs are engineered to deliver exceptional performance and durability for your vehicle. Featuring a fine-wire platinum center electrode and a platinum pad ground electrode, these spark plugs ensure greater wear resistance and sharper spark focus for reliable ignition. The innovative Heat-Active alloy allows the electrodes to maintain optimal operating temperatures under all engine loads, enhancing overall efficiency. With a V-trimmed ground electrode design, these plugs promote precise spark delivery, improving ignitability and engine performance. Designed as a standard replacement, they are built to provide maximum life and consistent performance, making them a dependable choice for maintaining your vehicle’s peak operation. Equipped with a resistor and a tapered seat type, these spark plugs are a perfect blend of advanced technology and practicality, ensuring stable performance and long-lasting reliability.

Product Features:
  • Double Platinum Power – Premium Spark Plug. More Powerful Performance.
  • Platinum center and ground electrode for greater wear resistance
  • Maintains stable operating temperature under all engine loads
  • Fine-wire center electrode for greater ignitability
  • V-trimmed ground electrode promotes sharper spark focus
  • Heat-Active alloy allows electrodes to reach optimal temperature
  • Platinum Center Electrode Tip: Guarantees maximum life and exceptional performance.
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Champion – Platinum Power Spark Plug (RS10PYC): Powerful Performance & Durability (Part No.3408)

Platinum Power Spark Plug (RS10PYC): Powerful Performance & Durability

from

$4.49
Champion Platinum Power spark plugs are engineered to deliver exceptional performance and durability, making them an ideal choice for maintaining peak engine efficiency. Featuring a platinum center electrode, these spark plugs ensure long-lasting reliability and consistent performance. The fine-wire center electrode enhances ignitability, while the V-trimmed ground electrode sharpens spark focus for optimal combustion. Constructed with the exclusive Heat-Active alloy, these plugs quickly reach and maintain the ideal operating temperature, ensuring smooth engine operation under various conditions. The platinum-tipped center wire resists wear and helps maintain the proper gap specification throughout the plug’s lifespan, reducing the need for frequent replacements. Designed as a standard replacement with a tapered seat type, these spark plugs are compatible with a wide range of vehicles. With a nickel ground electrode tip and integrated resistor, they provide dependable performance and value, making them a smart investment for any vehicle owner seeking reliable ignition components.

Product Features:
  • Platinum Power- Premium Spark Plug. Powerful Performance.
  • Platinum center electrode for long life
  • Fine-wire center electrode for greater ignitability
  • V-trimmed ground electrode promotes sharper spark focus
  • Heat-Active alloy allows electrodes to reach optimal temperature
  • Platinum tipped center wire resists wear and helps to maintain proper gap spec over life of the plug
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Motorcraft – High-Performance Spark Plug: Enhances Fuel Efficiency & Durability (Part No.SP-432-X)

High-Performance Spark Plug: Enhances Fuel Efficiency & Durability

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$9.99
This premium spark plug is engineered to optimize your engine’s performance, ensuring a smoother and more efficient combustion process. Designed with advanced materials and precision manufacturing, it significantly improves fuel efficiency and reduces emissions. Ideal for both everyday driving and high-performance applications, the Motorcraft High-Performance Spark Plug offers reliable ignition and long-lasting durability, making it a smart choice for maintaining your vehicle’s peak performance.

Product Features:
  • Optimizes Engine Performance: The Motorcraft High-Performance Spark Plug is engineered to enhance your engine’s performance, ensuring a smoother and more efficient combustion process.
  • Improves Fuel Efficiency: Designed with advanced materials and precision manufacturing, this spark plug significantly improves fuel efficiency, helping you save on fuel costs.
  • Reduces Emissions: By ensuring a more efficient combustion process, the Motorcraft High-Performance Spark Plug helps reduce harmful emissions, contributing to a cleaner environment.
  • Reliable Ignition: Ideal for both everyday driving and high-performance applications, this spark plug offers reliable ignition, ensuring your vehicle starts smoothly every time.
  • Long-Lasting Durability: Built to last, the Motorcraft High-Performance Spark Plug provides long-lasting durability, making it a smart choice for maintaining your vehicle’s peak performance over time.
  • Optimizes Engine Performance: The Motorcraft High-Performance Spark Plug is engineered to enhance your engine’s performance, ensuring a smoother and more efficient combustion process.
  • Improves Fuel Efficiency: Designed with advanced materials and precision manufacturing, this spark plug significantly improves fuel efficiency, helping you save on fuel costs.
  • Reduces Emissions: By ensuring a more efficient combustion process, the Motorcraft High-Performance Spark Plug helps reduce harmful emissions, contributing to a cleaner environment.
  • Reliable Ignition: Ideal for both everyday driving and high-performance applications, this spark plug offers reliable ignition, ensuring your vehicle starts smoothly every time.
  • Long-Lasting Durability: Built to last, the Motorcraft High-Performance Spark Plug provides long-lasting durability, making it a smart choice for maintaining your vehicle’s peak performance over time.
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Motorcraft – High-Durability Spark Plug: Reduces Misfires & Fuel Consumption (Part No.SP-500-X)

High-Durability Spark Plug: Reduces Misfires & Fuel Consumption

from

$9.49
Motorcraft Spark Plugs are original equipment on Ford Motor Company vehicles, engineered to meet strict Ford engineering standards for performance and reliability. These spark plugs are matched to specific engines to provide enhanced durability, eliminate misfires, reduce fuel consumption, and optimize emissions. They are resistant to oxidation and arc erosion, feature a multi-rib insulator to protect against misfire, and offer service intervals of up to 100,000 miles. Backed by Motorcraft’s Service Parts Warranty, these spark plugs are an exact fit for Ford, Lincoln, and Mercury vehicles and are designed with high-quality materials to provide reliable performance for almost any application. Motorcraft ignition components also help prevent false check engine lights, ensuring your vehicle runs smoothly.

Product Features:
  • Motorcraft spark plugs are matched to specific engines to provide enhanced durability, eliminate misfires, reduce fuel consumption and optimize emissions.
  • Backed by Motorcraft’s Service Parts Warranty
  • Exact fit for Ford, Lincoln and Mercury vehicles
  • Resistant to oxidation and arc erosion.
  • Multi-rib insulator protects against misfire.
  • Service intervals of up to 100,000 miles.
  • Motorcraft Spark Plugs are designed with high quality materials to provide reliable performance for almost any application.
  • Motorcraft Spark Plugs are what was in the vehicle when it was manufactured
  • Motorcraft ignition components help prevent false check engine lights.
  • Engineered for Ford Vehicles: Motorcraft High-Durability Spark Plugs are original equipment on Ford, Lincoln, and Mercury vehicles, ensuring a perfect fit and optimal performance.
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Champion – Iridium Spark Plug (RS12WYPB4): Maximum Performance & Longevity (Part No.9204)

Iridium Spark Plug (RS12WYPB4): Maximum Performance & Longevity

from

$7.99
The Champion Iridium Spark Plug is engineered for maximum performance and durability, making it the ultimate choice for high-performance engines. Featuring a fine-wire iridium center electrode and a platinum-enhanced ground electrode, this premium spark plug ensures sharper spark focus and greater ignitability for optimal engine efficiency. The V-trimmed ground electrode design enhances spark precision, while the Heat-Active alloy allows the electrodes to quickly reach and maintain stable operating temperatures under all engine loads. Built with a tapered seat and resistor type, it delivers consistent performance and reduces interference. Designed for longevity, the iridium center electrode ensures extended service life, making it a reliable and cost-effective solution for demanding driving conditions. Whether you’re looking to enhance your vehicle’s ignition system or maintain peak engine performance, this Champion spark plug is the perfect upgrade.

Product Features:
  • Champion Iridium – Maximum Performance. Premium Spark Plug
  • Iridium center electrode delivers maximum life
  • Fine-wire center electrode and V-trimmed for greater ignitability
  • V-trimmed ground electrode promotes sharper spark focus
  • Maintains stable operating temperature under all engine loads
  • Heat-Active alloy allows electrodes to reach optimal temperature quickly
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Motorcraft – Spark Plug: Reliable Ignition with Nickel Electrode Design (Part No.SP-400-X)

Spark Plug: Reliable Ignition with Nickel Electrode Design

from

$5.99
Spark Plug with a reliable ignition system features a standard center electrode design and nickel material for both the center and ground electrode tips, ensuring consistent performance and durability. The tapered seat type enhances the fit and sealing, making it an ideal choice for maintaining optimal engine efficiency. Crafted with high-quality nickel, this spark plug is built to withstand demanding conditions, offering long-lasting reliability and smooth ignition. Its precise engineering supports effective combustion, contributing to improved fuel economy and reduced emissions. Perfect for drivers seeking dependable ignition components, this spark plug delivers excellent value by combining robust construction with reliable functionality.

Product Features:
  • Designed with a standard center electrode for consistent and reliable ignition performance.
  • Nickel material used in both center and ground electrode tips ensures durability and long-lasting functionality.
  • Tapered seat type enhances fit and sealing, contributing to optimal engine efficiency.
  • High-quality construction withstands demanding conditions, providing smooth ignition and dependable operation.
  • Supports effective combustion, promoting improved fuel economy and reduced emissions.
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Top-Rated Spark Plug Brands For Your 1999 Mercury Mountaineer

When it comes to finding the perfect Spark Plug for your 1999 Mercury Mountaineer, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 7 trusted brands. We carry the most popular Spark Plug brands including NGK, Champion, and Autolite, and more, all known for their exceptional customer ratings (average brand rating of 4.8 stars) and competitive prices, as low as $2.99. Purchasing a Spark Plug from us here at Advance Auto Parts is a smart move for both you and your 1999 Mercury Mountaineer, providing peace of mind with parts that meet or exceed OEM standards.

Popular NGK 1999 Mercury Mountaineer Spark Plugs

If you’re looking for a top-quality Spark Plug for your 1999 Mercury Mountaineer, Advance Auto Parts has exactly what you need with our selection of NGK Spark Plugs. We have 3 NGK Spark Plugs in stock for this fitment, all known for their durability and precision fit. With prices starting at just $7.49 and an average cost of $10.32, you’ll find the perfect Spark Plug for your needs and budget. NGK Spark Plugs for the 1999 Mercury Mountaineer come highly rated, with over 684 customer reviews and an impressive average rating of 4.8 stars. Choosing a NGK Spark Plug from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
G-Power Platinum Spark Plug (TR55GP): Enhanced Durability & Efficiency
from $8.49
(133)
G-Power Platinum Spark Plug (TR55GP): Enhanced Durability & Efficiency
“good product. successfully made trip from Indy to Seattle with no problems”

Top-Quality Champion 1999 Mercury Mountaineer Spark Plugs

For those in search of a high-quality Spark Plug for their 1999 Mercury Mountaineer, Advance Auto Parts offers a great selection of Champion Spark Plugs. With 3 Champion Spark Plugs in stock, you can trust you’re getting top-tier parts designed for durability and a perfect fit. Prices for these Spark Plugs start at just $2.99, with an average price of $4.82, giving you a range of options to suit your budget. Backed by over 60 customer ratings and an average rating of 4.7 stars, Champion Spark Plugs provide both reliability and excellent performance. Choosing a Champion Spark Plug from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.
Iridium Spark Plug (RS14WYPB5): Maximum Performance & Longevity
from $8.49
(2)
Iridium Spark Plug (RS14WYPB5): Maximum Performance & Longevity
“These plugs are the best and If you gap them right you will notice improvement in everything. Be sure on all plug that are Iridium do not gap the plug”

FAQs for 1999 Mercury Mountaineer Spark Plugs

What are the best-selling Spark Plugs for 1999 Mercury Mountaineers?

Out of 37 Spark Plugs that fit 1999 Mercury Mountaineers, the following parts are the top sellers:

What’s the price range for 1999 Mercury Mountaineer Spark Plugs?

The prices of Spark Plugs for the 1999 Mercury Mountaineer range from $2.99 up to $23.99 for the most premium parts.

What is the average price of a Spark Plug for a 1999 Mercury Mountaineer?

The average price for Spark Plugs for the 1999 Mercury Mountaineer is $8.56. Keep in mind the variety of part types within our Spark Plug category, where you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Spark Plugs for other Mercury Mountaineer model years?

Yes, we carry Spark Plugs for 12 model years of Mercury Mountaineers between 1997 and 2010. The following model years are the most popular for Spark Plug purchases: 2010, 2009, 2008, 2007, 2006, 2005, 2004, 2003, and 2002.

What are the cheapest Spark Plugs for my 1999 Mercury Mountaineer?

Does Advance Auto Parts sell Spark Plugs for any other 1999 Mercury models?

Yes. We stock Spark Plugs for 5 other popular 1999 Mercury models. Some of the most popular are 1999 Cougar Spark Plugs, 1999 Grand Marquis Spark Plugs, 1999 Villager Spark Plugs, 1999 Sable Spark Plugs, and 1999 Tracer Spark Plugs.

What are the top-rated Spark Plugs that fit the 1999 Mercury Mountaineer?

The one 1999 Mercury Mountaineer Spark Plug we have in stock is the Copper Plus Spark Plug (RS12YC): Dependable Performance & Durability. It is rated 4.5 stars and costs $2.99.

What types of Spark Plugs do you sell for my 1999 Mercury Mountaineer?

We currently have just 1 Spark Plug in stock for a 1999 Mercury Mountaineer, and as of 11/2/25, it is a Spark Plug.

Can I get help with 1999 Mercury Mountaineer Spark Plug orders?

Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Mercury Spark Plugs and more.

What is your return policy for Mercury Mountaineer Spark Plugs?

Advance Auto Parts keeps returns simple. For new Mercury Mountaineer Spark Plugs and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.