1986 Mercury Topaz Spark Plugs

Essential 1986 Mercury Topaz Spark Plugs

Autolite Iridium – Iridium XP Finewire Spark Plug: Improved Durability, More Focused Ignition (Part No.XP104)

Iridium XP Finewire Spark Plug: Improved Durability, More Focused Ignition

from

$9.99
Our best spark plug! 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
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Champion – Platinum Power Spark Plug: Powerful Perfromance, OE Replacement, RS10PYC (Part No.3408)

Platinum Power Spark Plug: Powerful Perfromance, OE Replacement, RS10PYC

from

$4.49
Champion® Platinum Power¿ spark plugs deliver powerful performance. Made from exclusive Heat-Active¿ alloy, a fine-wire center electrode and V-trimmed ground electrode provides sharp spark focus.

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 – Spark Plug: 30,000-Mile Interval & RFI Reduction (Part No.SP-419)

Spark Plug: 30,000-Mile Interval & RFI Reduction

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$2.99
Motorcraft Spark Plug with 30,000-Mile Interval and RFI Reduction is designed, engineered, and recommended by Ford Motor Company. This spark plug is the same part installed when the engine rolled off the assembly line, ensuring OEM quality. It features a copper core electrode and a nickel chromium alloy side electrode for excellent heat dissipation and durability. The resistor reduces radio frequency interference (RFI) and electrode erosion, while the copper-glass seal bonds the insulator and terminal post center electrode together, ensuring full required voltage at the spark gap and a gas-tight seal. With a 30,000-mile service interval and a tapered seat type, this spark plug offers reliable performance and longevity.

Product Features:
  • Same part installed when the engine rolled off the assembly line
  • 30,000-mile service interval
  • Copper core electrode and nickel chromium alloy side electrode for excellent heat dissipation and durability.
  • Resistor reduces radio frequency interference (RFI) and electrode erosion
  • Copper-glass seal bonds insulator and terminal post center electrode together to ensure full required voltage at spark gap and a gas-tight seal
  • OEM Quality Assurance: Designed, engineered, and recommended by Ford Motor Company, this spark plug is the same part installed when the engine rolled off the assembly line, ensuring original equipment manufacturer (OEM) quality.
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ACDelco – Double Platinum Spark Plug: Original Equipment Replacement (Part No.41-950)

Double Platinum Spark Plug: Original Equipment Replacement

from

$9.79
ACDelco GM Original Equipment Double Platinum Spark Plugs are designed, engineered, and tested to rigorous standards, and are backed by General Motors. With a copper core and double platinum pads on the center electrode, these plugs are designed to deliver long-lasting performance. ACDelco GM Original Equipment parts are the true OE parts installed during the production 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:
  • 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
  • Some ACDelco GM Original Equipment parts may have formerly appeared as GM Genuine Parts (OE) or ACDelco Professional
  • ACDelco GM Original Equipment parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
  • GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
  • GM regularly updates production and service part designs to integrate new materials and technologies
  • Copper Core: Designed with a copper core to provide excellent heat transfer and electrical conductivity.
  • Conical Seat Type: Equipped with a conical seat type for a secure fit and optimal performance.
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Motorcraft – Spark Plug (Part No.SP-486-X)

Spark Plug

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$7.29
The Motorcraft Spark Plug is a high-quality replacement spark plug designed to provide reliable performance and long-lasting durability for your vehicle. It features a nickel alloy electrode that provides superior wear resistance and a platinum tip that ensures consistent performance over the life of the plug. The Motorcraft Spark Plug also has a ribbed insulator design that helps prevent misfires and a copper core that provides efficient heat transfer. It is designed to meet or exceed OEM specifications and is compatible with a wide range of vehicles. Whether you’re looking to replace worn-out spark plugs or upgrade to a higher-quality option, the Motorcraft Spark Plug is an excellent choice that will help keep your engine running smoothly and efficiently.
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DENSO – Iridium TT Spark Plug: Ultimate Endurance and Power, 0.4mm Iridium Tip, last 100K+ Miles, IT16TT (Part No.4713)

Iridium TT Spark Plug: Ultimate Endurance and Power, 0.4mm Iridium Tip, last 100K+ Miles, IT16TT

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$10.99
Durability of an OE style plug combined with Power & Torque of high performance.

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 & Torque of high performance.
  • Withstands temperatures greater than 4000┬░ 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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NGK – G-Power Spark Plug: Single Platinum Tip Design, TR5GP (Part No.3186)

G-Power Spark Plug: Single Platinum Tip Design, TR5GP

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$6.29
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
  • Tapered Seat Type: The tapered seat type ensures a secure fit and optimal performance in compatible vehicles.
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Champion – Double Platinum & Power Spark Plug Exceptional Perf OE Replacement RS14PYPB5 (Part No.7940)

Double Platinum & Power Spark Plug Exceptional Perf OE Replacement RS14PYPB5

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$6.29
Champion® Double Platinum Power spark plugs deliver more powerful performance with their premium design. Featuring a platinum center and ground electrode, these spark plugs offer greater wear resistance and maintain a stable operating temperature under all engine loads. The fine-wire center electrode ensures greater ignitability, while the V-trimmed ground electrode promotes sharper spark focus. The exclusive Heat-Active alloy allows the electrodes to reach optimal temperature, ensuring maximum life and 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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Motorcraft – High-Performance Spark Plug: Enhances Fuel Efficiency (Part No.SP-413-X)

High-Performance Spark Plug: Enhances Fuel Efficiency

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$4.99
Engineered for superior ignition performance, the Motorcraft High-Performance Spark Plug is designed to optimize fuel efficiency and ensure reliable starts. Crafted with high-quality materials, it offers exceptional durability and longevity, making it an ideal choice for maintaining peak engine performance. This spark plug is tailored to meet the rigorous demands of modern engines, providing consistent and efficient combustion for a smoother driving experience.

Product Features:
  • Optimizes Fuel Efficiency: The Motorcraft High-Performance Spark Plug is engineered to enhance fuel efficiency, helping you get the most out of every gallon.
  • Superior Ignition Performance: Designed for superior ignition performance, this spark plug ensures reliable starts and consistent engine operation.
  • Exceptional Durability and Longevity: Crafted with high-quality materials, the Motorcraft High-Performance Spark Plug offers exceptional durability and longevity, making it a reliable choice for long-term use.
  • Tailored for Modern Engines: This spark plug is specifically tailored to meet the rigorous demands of modern engines, ensuring efficient combustion and peak performance.
  • Smoother Driving Experience: By providing consistent and efficient combustion, the Motorcraft High-Performance Spark Plug contributes to a smoother and more enjoyable driving experience.
  • Optimizes Fuel Efficiency: The Motorcraft High-Performance Spark Plug is engineered to enhance fuel efficiency, helping you get the most out of every gallon.
  • Superior Ignition Performance: Designed for superior ignition performance, this spark plug ensures reliable starts and consistent engine operation.
  • Exceptional Durability and Longevity: Crafted with high-quality materials, the Motorcraft High-Performance Spark Plug offers exceptional durability and longevity, making it a reliable choice for long-term use.
  • Tailored for Modern Engines: This spark plug is specifically tailored to meet the rigorous demands of modern engines, ensuring efficient combustion and peak performance.
  • Smoother Driving Experience: By providing consistent and efficient combustion, the Motorcraft High-Performance Spark Plug contributes to a smoother and more enjoyable driving experience.
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Champion – Double Platinum – Boxed – RS14PYPB (Part No.7408)

Double Platinum - Boxed - RS14PYPB

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$5.29
Champion Double Platinum Power spark plugs deliver more powerful performance. Featuring exclusive Heat-Active alloy, platinum fine wire center electrode and platinum pad ground electrode provide maximum life and sharper spark focus.

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
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Champion – Platinum Power Spark Plug: Powerful Perfromance, OE Replacement, RS10PYC4 (Part No.3401)

Platinum Power Spark Plug: Powerful Perfromance, OE Replacement, RS10PYC4

from

$4.49
Champion Platinum Power spark plugs deliver powerful performance. Made from exclusive Heat-Active alloy, a fine-wire center electrode and V-trimmed ground electrode provides sharp spark focus.

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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ACDelco – RAPIDFIRE Premium Platinum Tip Copper Core Spark Plug: Reduces Misfires & Enhances Durability (Part No.12)

RAPIDFIRE Premium Platinum Tip Copper Core Spark Plug: Reduces Misfires & Enhances Durability

from

$6.79
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 sea
  • 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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Autolite Iridium – Iridium XP Finewire Spark Plug: Improved Durability, More Focused Ignition (Part No.XP105)

Iridium XP Finewire Spark Plug: Improved Durability, More Focused Ignition

from

$9.99
Our best spark plug! 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
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DENSO – Double Platinum Spark Plug: OE Performance, lasts 60K+ Miles, PT16EPR10 (Part No.5091)

Double Platinum Spark Plug:  OE Performance, lasts 60K+ Miles, PT16EPR10

from

$7.99
Manufactured to the strictest OE performance, durability and emissions standards.

Product Features:
  • OE grade platinum on both center and ground electrods
  • 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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ACDelco – Copper Core Spark Plug: Original Equipment Replacement (Part No.R42LTS)

Copper Core Spark Plug: Original Equipment Replacement

from

$4.99
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
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NGK – OE Series Laser Iridium Spark Plug: Fine Wire Tip Design, ITR5H13 (Part No.97287)

OE Series Laser Iridium Spark Plug: Fine Wire Tip Design, ITR5H13

from

$18.99
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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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

$11.79
Increased performance with World’s smallest Iridium Center Eletrode (0.4mm).

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° 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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Autolite – Double Platinum Spark Plug: Platinum Firing, Superior Durability, Longer Life (Part No.APP105)

Double Platinum Spark Plug: Platinum Firing, Superior Durability, Longer Life

from

$6.49
Autolite has over 100 years of engineering experience and has sold over 11 billion plugs. Designed and engineered in the USA, Autolite Double Platinum spark plugs feature platinum-to-platinum firing which virtually eliminates gap erosion, reduces misfires and increases durability of the plug. Consider upgrading to Autolite Iridium XP spark plugs for increased performance.

Product Features:
  • Works to optimize engine performance for a longer life and improved fuel economy
  • OE design
  • Full-platinum tips; platinum on both the center and side electrodes to promote reduced gap wear
  • Platinum ball welding process provides a consistent point of contact for enhanced adhesion
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Champion – Iridium Spark Plug: Maximum Performance, OE Replacement, RS12WYPB4 (Part No.9204)

Iridium Spark Plug: Maximum Performance, OE Replacement, RS12WYPB4

from

$7.99
Champion® Iridium – the ultimate element. This spark plug’s fine-wire iridium center and platinum ground electrodes provide the sharpest spark focus for maximum 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
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ACDelco – Double Platinum Spark Plug (Part No.41-810)

Double Platinum Spark Plug

from

$9.79
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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Autolite – Platinum Spark Plug: Fires Cleaner, Easier Starts, Quicker Acceleration (Part No.AP105)

Platinum Spark Plug: Fires Cleaner, Easier Starts, Quicker Acceleration

from

$4.49
With over 100 years of engineering expertise and more than 11 billion plugs sold, Autolite delivers unmatched reliability. Designed and engineered in the USA, these spark plugs feature a high nickel alloy side electrode that maintains a precise gap and a full platinum tip that ensures virtually no gap erosion for extended life. The necked-down center electrode fires quicker and cleaner with less voltage, resulting in easier starts, quicker acceleration, and improved fuel economy compared to standard plugs. The tapered seat type further enhances performance and durability.

Product Features:
  • High nickel alloy side electrode maintains precise gap
  • Full platinum tip assures virtually no gap erosion for long life
  • Necked-down center electrode fires quicker, cleaner with less voltage for easier starts, quicker acceleration and improved fuel economy (as compared to standard plugs)
  • Improved Fuel Economy: Designed to enhance fuel efficiency compared to standard spark plugs.
  • Tapered Seat Type: Enhances performance and durability for a longer-lasting spark plug.
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ACDelco – Rapidfire Spark Plug (Part No.3)

Rapidfire Spark Plug

from

$5.79
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 sea
  • 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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NGK – G-Power Spark Plug: Single Platinum Tip Design, TR55GP (Part No.3403)

G-Power Spark Plug: Single Platinum Tip Design, TR55GP

from

$5.99
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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ACDelco – Copper Core Spark Plug: Original Equipment Replacement (Part No.R44LTS)

Copper Core Spark Plug: Original Equipment Replacement

from

$4.99
ACDelco Professional 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.

Product Features:
  • Black Onyx coating helps reduce corrosion
  • Copper core provides great heat transfer and helps maximize plug durability
  • Ribbed suppressor seal extends resistance and helps prevent spark ‘flash over’ and misfires
  • Nickel-chrome alloy sheathing helps prevent corrosion on center electrode
  • Available for use in Marine applications
  • Some ACDelco GM Original Equipment parts may have formerly appeared as GM Genuine Parts (OE) or ACDelco Professional
  • ACDelco GM Original Equipment parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
  • GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
  • GM regularly updates production and service part designs to integrate new materials and technologies
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Motorcraft – SPARK PLUG (Part No.SP-419-X)

SPARK PLUG

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$2.99
SPARK PLUG

Autolite – Copper Spark Plug: Delivers Quick Starts, Good Fuel Economy, Smooth Acceleration (Part No.765)

Copper Spark Plug: Delivers Quick Starts, Good Fuel Economy, Smooth Acceleration

from

$3.49
With over 100 years of engineering expertise and more than 11 billion plugs sold, Autolite continues to set the standard in spark plug technology. Designed and engineered in the USA, these spark plugs feature a copper cored center electrode for higher thermal conductivity and a specially engineered high nickel alloy center and ground electrode for extended life. The high alumina ceramic ensures high dielectric strength, while the leak-proof, heat-fused internal seal guarantees durability. Additionally, the multi-rib insulator prevents flash-over, and the tapered seat type enhances performance.

Product Features:
  • Copper cored center electrode for higher thermal conductivity
  • Specially engineered high nickel alloy center and ground electrode for extended life
  • High alumina ceramic for high dielectric strength
  • Leak proof, heat fused internal seal for durability
  • Multi-rib insulator prevents flash-over
  • Quick Starts and Smooth Acceleration: The Autolite Copper Spark Plug is engineered to deliver quick starts and smooth acceleration, enhancing your driving experience.
  • Good Fuel Economy: Designed to optimize fuel efficiency, these spark plugs help you get the most out of every gallon.
  • Enhanced Performance with Tapered Seat Type: The tapered seat type design enhances the performance of the spark plug, ensuring a reliable and efficient operation.
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Motorcraft – Spark Plug (AGSF32CA) (Part No.SP-447-A)

Spark Plug (AGSF32CA)

from

$4.79
Motorcraft Spark Plugs are original equipment on Ford Motor Company vehicles engineered to meet strict Ford engineering standards to provide original equipment performance and reliability. Delivering performance, reliability and confidence, Motorcraft spa

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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ACDelco – Professional Double Platinum Spark Plug (Part No.41-963)

Professional Double Platinum Spark Plug

from

$4.49
ACDelco is a global leader in automotive replacement parts and related services and offers quality aftermarket products for most makes and models, including General Motors, Ford, Chrysler, Toyota and Honda, plus many original equipment service replacement parts. ACDelco products can be found in more than 100 countries located on six of the seven continents and are sourced globally to meet the needs of the local markets, including “maintenance” parts commonly replaced during the lifetime of a vehicle (e.g., batteries, oil filters, air filters, wiper blades, shocks and brakes), as well as “repair” parts (e.g., alternators, radiators, chassis and heating/cooling components). ACDelco offers more than 80,000 parts across 37 product lines. ACDelco has over 100 years of experience in the automotive industry and is a brand of GM Customer Care and Aftersales, a division of General Motors. ACDelco employs a two- or three-tiered distribution model, utilizing a network of appointed wholesale distributors to service independent installers, ACDelco independent service centers, retail and fleet customers.

Product Features:
  • The kind of firepower you expect from ACDelco. The spark plug is what started it all for us, and with over 100 years of innovation behind each spark plug, you know they’re going to be great. From the old to the new and even the non-automotive, ACDelco has
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1986 Mercury Topaz Spark Plugs

Maybe you’re in the middle of a full rebuild of that 1986 Mercury Topaz. Maybe you just need a couple of Spark Plugs. Either way, Advance Auto Parts has 45 different Spark Plugs in our inventory ranging from $2.79 to $18.99. That means you can find the exact parts or products you need to keep that 1986 Mercury Topaz running smoothly.

Spark Plugs are only as good as their brand. We stock 8 different brands to make sure you have plenty of trusted parts to choose from for your 1986 Mercury Topaz. NGK, Autolite, and Motorcraft are just some of the brands we stock. Search for brands you know or compare prices and reviews to help you decide!

We know you’ll find the perfect Spark Plugs for your 1986 Mercury Topaz, but don’t take our word for it – read our customer ratings and reviews and buy with confidence. Out of the 1,942 reviews in this category, some of the top rated parts include DiamondFIRE Automotive Spark Plug: More Power, Saves Gas with 4.0 stars and Double Platinum Spark Plug: Platinum Firing, Superior Durability, Longer Life with 4.8 stars.

So if you’re in the market for aftermarket Spark Plugs to keep your 1986 Mercury Topaz rolling for years to come, look no further. Shop online and have your products shipped direct to your door, or pick up at the nearest Advance Auto Parts location today!

Spark Plugs Brands To Make Your 1986 Mercury Topaz Last

Simple repair, complete replacement, or a full rebuild. No matter the job, your 1986 Mercury Topaz demands trusted brand parts and products to keep it running. Many trusted brands of Spark Plugs make up Advance Auto Parts’ inventory, and all are ready to help make your Topaz the best it can be. Be sure to browse some of our top Spark Plugs brands and parts.

Popular Dorman – Help Spark Plugs

We carry Dorman – Help parts in our stock across Spark Plugs categories, plus more. For a 1986 Mercury Topaz, our most popular Dorman – Help Spark Plugs include:

FAQs for 1986 Mercury Topaz Spark Plugs

What are the most purchased Spark Plugs for the 1986 Mercury Topaz?

Out of 45 Spark Plugs for the 1986 Mercury Topaz, the most popular in our inventory are:

What are the top-rated 1986 Mercury Topaz Spark Plugs?

Top-rated Spark Plugs for your 1986 Mercury Topaz based on customer reviews/ratings are:
PT16TT Platinum TT Spark Plug
from $5.99
(90)
PT16TT Platinum TT Spark Plug
“On line”