Essential 2021 Ford E-350 Super Duty Spark Plugs

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$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 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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$3.99

Autolite® Copper spark plugs are engineered to deliver quick starts and the power your vehicle or applications needs to meet performance expectations.

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.

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$13.57

The DENSO Double-Platinum plug features platinum on both the center and ground electrodes. The precious metal fights corrosion and erosion, ensuring superior spark performance and maximum spark plug life. DENSO Double Platinum spark plugs incorporate the precious metal on both the center and ground electrodes, not just on the center electrode as with conventional platinum plugs. The result is a significant improvement in spark plug life.

Product Features:

Platinum center electrode
Platinum ground electrode
Premium shell construction with machine-rolled threads
Sustained spark performance over 60,000 miles
Reduced secondary required voltage, increased ignition efficiency DENSO engineering studies show that Double Platinum plugs can run longer with reduced erosion, minimizing spark gap growth throughout the life of the plug.

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$12.99

ACDelco GM Original Equipment Iridium Spark Plugs are designed, engineered, and tested to rigorous standards, and are backed by General Motors. They are our latest in spark plug technology and an exact replacement for your vehicle’s original components. Iridium composition provides a high melting point and great strength, and provides excellent wear resistance and durability. 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:

Iridium is the latest in spark plug technology and is an exact replacement for vehicles’ original components
Iridium composition provides a high melting point and great strength, helps to provide excellent wear resistance and durability
Iridium offers excellent engine idle stability, reliable cold starting, quick acceleration and smooth performance
Three Piece Fired in Suppressor seal meters spark energy for long electrode life, helps prevent combustion leakage and helps block radio frequencies that can affect vehicle electronics
Iridium plugs are laser-welded which provides precision welds, reduces excess debris and wear rate, thus increasing durability
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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$6.49

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. With a platinum center and ground electrode tip, they are resistant to oxidation and arc erosion, ensuring long-lasting performance. The multi-rib insulator protects against misfires, and they are backed by Motorcraft’s Service Parts Warranty. Designed for exact fit in Ford, Lincoln, and Mercury vehicles, these spark plugs offer service intervals of up to 100,000 miles and help prevent false check engine lights, making them a reliable choice for almost any application.

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.
Enhanced Durability: Engineered to meet strict Ford engineering standards, these spark plugs feature a platinum center and ground electrode tip, providing resistance to oxidation and arc erosion for long-lasting performance.

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$6.99

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 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, ensuring reliable performance for almost any application. Motorcraft ignition components also help prevent false check engine lights, giving you confidence and peace of mind.

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.
Iridium Center Electrode Tip: The Denso Iridium Spark Plug features a center electrode tip made of iridium, providing exceptional longevity and reliable performance.
Flat Seat Type Design: The flat seat type design enhances the durability of the spark plug, making it an ideal choice for maintaining optimal engine efficiency.
Strict OE Standards: Manufactured to the strictest OE performance, durability, and emissions standards, ensuring high-quality and reliable performance.
Long-Life Performance: Engineered for long-lasting performance, this spark plug helps maintain optimal engine efficiency over time.
Reduced Emissions: Designed to help reduce emissions, contributing to a cleaner and more efficient engine operation.

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$6.49

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 spark plugs are available for a broad range of applications, including domestic and import cars and trucks of all makes and 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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$12.99

NGK Laser Platinum spark plugs provide high ignitability and longer service life compared to conventional nickel spark plugs. Laser Platinum plugs are tested to the highest standards to ensure quality and durability. Engineered specifically for OE applications. Laser platinum plugs provide stable idling, superior anti-fouling, improved fuel efficiency and lower emissions. High-grade pure alumina ceramic and 98% pure copper core prevents spark plug from overheating and provides reliable starts. Most Laser Platinum 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 platinum alloy center electrode provides consistent performance
PLATINUM ALLOY CENTER ELECTRODE: Longer wearing and higher temperature resistance compared to traditional nickel spark plugs
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 platinum alloy plugs

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$11.99

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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$7.49

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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$19.99

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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$6.99

Autolite® Double Platinum spark plugs have a platinum-to-platinum design that decreases gap erosion, reduces misfires, and provides improved durability, leading to longer service life. It provides superior performance over copper and platinum plugs primarily used in distributorless ignition system (DIS) engines.

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.

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$7.28

Motorcraft Original Equipment spark plugs are designed, engineered and recommended by Ford Motor Company.

Product Features:

Same part installed when the engine rolled off the assembly line
100,000-mile service interval
Iridium-enhanced center electrode for improved durability and wear resistance
.6mm finewire design improves ignitability
Designed for overall durability with virtually no gap erosion

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$7.99

Engineered to meet strict Ford engineering standards, these spark plugs are matched to specific engines to provide enhanced durability, eliminate misfires, reduce fuel consumption, and optimize emissions. With a platinum center electrode tip and nickel ground electrode tip, they are resistant to oxidation and arc erosion. The multi-rib insulator protects against misfire, ensuring reliable performance for 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 help prevent false check engine lights. Designed with high-quality materials, they deliver original equipment performance and reliability for a broad range of domestic and import cars and trucks.

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.
Enhanced Durability: Engineered with a platinum center electrode tip and nickel ground electrode tip, these spark plugs resist oxidation and arc erosion, ensuring long-lasting performance.

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$14.79

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 PROJECTED SQUARE PLATINUM ELECTRODE DESIGN: Combines 0.6 millimeter ruthenium center with a unique cut-back PSPE ground electrode
RUTHENIUM ALLOY CENTER ELECTRODE: NGK’s patented ruthenium technology produces maximum performance, ignitability & durability at high temperatures
PSPE DESIGN: Projected square platinum electrode shape of the ground electrode provides the best ignitability and service life for high heat engines
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 PSPE type spark plugs or for those seeking an aftermarket plug with the latest OE technology
Enhanced Fuel Burn: Provides a more complete fuel burn, resulting in quicker throttle response, smoother idle, and better cold starts.
Industry-Leading Durability: Ruthenium center electrode ensures exceptional durability and longevity.

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$9.99

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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$11.99

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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$16.99

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

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$6.99

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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$13.24

DENSO Iridium Power spark plugs represent a performance breakthrough. The laser-welded center electrode is only 0.4mm in diameter – the slimmest iridium electrode in the industry. The taper-cut side electrode complements the design, delivering reliable spark energy under the most gruelling pressures and temperatures. DENSO engineers used the power of this miraculous metal to produce an iridium center electrode that is only 0.4mm in diameter. With its superior thermal qualities, this whisker-fine electrode is capable of taking the most extreme heat and punishment. This breakthrough was matched to one of DENSO’s most famous innovations, the patented U-Groove ground electrode. The combination of these two features resulted in the Iridium Power® plug, one of the most advanced and innovative spark plugs on the market.

Product Features:

Tapered cut, U-Groove ground electrode
0.4mm iridium center electrode
360-degree laser welding assembly process
Required ignition voltage reduced
Unsurpassed center electrode durability
Available for many performance and power sports applications, including Corvette, Viper, and Harley-Davidson The Iridium Power plug delivers greater spark energy while demanding significantly less secondary required voltage from the ignition system.

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$14.99

HIGH IGNITABILITY PROJECTED SQUARE PLATINUM ELECTRODE DESIGN: Combines 0.6 millimeter ruthenium center with a unique cut-back PSPE ground electrode
RUTHENIUM ALLOY CENTER ELECTRODE: NGK’s patented ruthenium technology produces maximum performance, ignitability & durability at high temperatures
PSPE DESIGN: Projected square platinum electrode shape of the ground electrode provides the best ignitability and service life for high heat engines
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 PSPE type spark plugs or for those seeking an aftermarket plug with the latest OE technology

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$6.99

The Spark Plugs are the product of years of fundamental research in the combustion field. The unique patented electrode configuration of these new The spark plugs increases the amount of combustion pressure created during each power stroke of an engine, which results in a marked increase in power output, fuel economy, and reduced emissions in all gasoline engines. E3.53 is a 14mm, .708 reach plug with a taper seat. It fits domestic applications, and is widely available in automotive retail stores. The automotive plugs have three legs securing the Diamond Fire electrode to the shell. This allows for excellent heat transfer, and helps to create more turbulence in the cylinder. The patented Diamond Fire side wire is proven to increase power, reduce fuel consumption and improve hydrocarbon emissions in long-term use.

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 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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$14.24

The NGK Iridium IX offers extreme ignitability, improved throttle response and superior anti fouling properties. The Iridium alloy has extremely high melting point, ensuring high durability and a consistently stable spark that is perfect for today’s high-tech, high-performance engines. NGK’s IX Iridium Series Plugs were Designed Specifically for the Performance Enthusiast Designed specifically for the performance enthusiast.

Product Features:

Fine Wire Center Electrode Ensures High Durability and a Consistently Stable Spark
Iridium Alloy has an Extremely High Melting Point, Perfect for Today’s High-Tech, High Performance Engines
Trivalent Metal Plating Provides Superior Anti-Corrosion and Anti-Seizing Properties
Corrugated Ribs Prevent Flashover
Pure Alumina Silicate Ceramic Insulator, Provides Superior Strength and Better Heat Transfer
Copper Core Aids in Heat Removal
Triple Seals Prevent Leakage

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$14.49

Ir SparkPlug

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$4.99

Autolite® Platinum spark plugs are engineered with a platinum center electrode firing tip that provides improved performance and increased durability, making it a reliable choice for all older engine applications and designs. Its platinum design delivers quicker firing, smoother starts, for better acceleration, and improved fuel efficiency.

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.

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$9.99

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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$9.99

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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$13.99

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 cut ground electrode provides improved starting, idling and throttle response. The Iridium fine wire center electrode’s durability is six times harder than platinum. Iridium alloy’s extremely high melting point is perfect for today’s engines. For even greater performance consider upgrading to an NGK Ruthenium HX plug.

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
Outstanding Acceleration and High Fuel Efficiency: NGK Iridium IX spark plugs are engineered to deliver superior acceleration and enhance fuel efficiency, making them ideal for performance enthusiasts.
Extreme Ignitability and Anti-Fouling: These spark plugs offer exceptional ignitability and anti-fouling properties, ensuring reliable performance and longevity.

Most Popular Spark Plugs for 2021 Ford E-350 Super Duties

Enhance your 2021 Ford E-350 Super Duty with one of the 8 Spark Plugs we have in stock, starting at just $6.99.

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$14.79

HIGH IGNITABILITY PROJECTED SQUARE PLATINUM ELECTRODE DESIGN: Combines 0.6 millimeter ruthenium center with a unique cut-back PSPE ground electrode
RUTHENIUM ALLOY CENTER ELECTRODE: NGK’s patented ruthenium technology produces maximum performance, ignitability & durability at high temperatures
PSPE DESIGN: Projected square platinum electrode shape of the ground electrode provides the best ignitability and service life for high heat engines
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 PSPE type spark plugs or for those seeking an aftermarket plug with the latest OE technology
Enhanced Fuel Burn: Provides a more complete fuel burn, resulting in quicker throttle response, smoother idle, and better cold starts.
Industry-Leading Durability: Ruthenium center electrode ensures exceptional durability and longevity.

from

$6.99

The Spark Plugs are the product of years of fundamental research in the combustion field. The unique patented electrode configuration of these new The spark plugs increases the amount of combustion pressure created during each power stroke of an engine, which results in a marked increase in power output, fuel economy, and reduced emissions in all gasoline engines. E3.74 is a 14mm, 1.000 reach plug with a taper seat. It fits a wide variety of late model applications, especially Ford applications. The automotive plugs have three legs securing the Diamond FIRE electrode to the shell. This allows for excellent heat transfer, and helps to create more turbulence in the cylinder. The patented Diamond FIRE side wire is proven to increase power, reduce fuel consumption and improve hydrocarbon emissions in long-term use.

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 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.
Enhanced Heat Transfer: Three legs securing the Diamond FIRE electrode to the shell ensure excellent heat transfer and create more turbulence in the cylinder.
Wide Compatibility: The E3.74 spark plug is a 14mm, 1.000 reach plug with a taper seat, fitting a wide variety of late model applications, especially Ford vehicles.
Eco-Friendly Performance: Proven to reduce fuel consumption and improve hydrocarbon emissions, contributing to a cleaner environment.
Long-Term Efficiency: The Diamond FIRE side wire is designed for long-term use, maintaining increased power and reduced fuel consumption over time.

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$13.99

ACTUAL OE or EQUIVALENT DESIGN: OEM quality construction fine wire platinum alloy center electrode provides consistent performance
PLATINUM ALLOY CENTER ELECTRODE: Longer wearing and higher temperature resistance compared to traditional nickel spark plugs
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 platinum alloy plugs

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$14.49

Ir SparkPlug

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$13.24

Tapered cut, U-Groove ground electrode
0.4mm iridium center electrode
360-degree laser welding assembly process
Required ignition voltage reduced
Unsurpassed center electrode durability
Available for many performance and power sports applications, including Corvette, Viper, and Harley-Davidson The Iridium Power plug delivers greater spark energy while demanding significantly less secondary required voltage from the ignition system.

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$9.10

Spark Plug

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$8.99

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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$7.99

Engineered for superior ignition performance, the Motorcraft High-Performance Spark Plug is designed to optimize fuel efficiency and ensure reliable starts. Crafted with precision, this spark plug offers exceptional durability and consistent performance, making it an ideal choice for maintaining your vehicle’s peak performance. Upgrade to Motorcraft and experience the difference in your engine’s responsiveness and fuel economy.

Product Features:

Enhances Fuel Efficiency: The Motorcraft High-Performance Spark Plug is specifically designed to optimize fuel efficiency, helping you save on fuel costs.
Superior Ignition Performance: Engineered for superior ignition performance, this spark plug ensures reliable starts every time.
Exceptional Durability: Crafted with precision, the Motorcraft High-Performance Spark Plug offers exceptional durability, providing long-lasting performance.
Consistent Performance: This spark plug delivers consistent performance, making it an ideal choice for maintaining your vehicle’s peak performance.
Improved Engine Responsiveness: Upgrade to Motorcraft and experience a noticeable difference in your engine’s responsiveness and overall fuel economy.
Enhances Fuel Efficiency: The Motorcraft High-Performance Spark Plug is specifically designed to optimize fuel efficiency, helping you save on fuel costs.
Superior Ignition Performance: Engineered for superior ignition performance, this spark plug ensures reliable starts every time.
Exceptional Durability: Crafted with precision, the Motorcraft High-Performance Spark Plug offers exceptional durability, providing long-lasting performance.
Consistent Performance: This spark plug delivers consistent performance, making it an ideal choice for maintaining your vehicle’s peak performance.
Improved Engine Responsiveness: Upgrade to Motorcraft and experience a noticeable difference in your engine’s responsiveness and overall fuel economy.

2021 Ford E-350 Super Duty Spark Plugs

NGK – OE Series V-Power Nickel Spark Plug: V-Groove Tip Design, TR55 (Part No.3951)

Autolite – Copper Resistor Spark Plug (Part No.103)

DENSO – Double Platinum Spark Plug (Part No.F1000139293ND)

ACDelco – Iridium Spark Plug: Original Equipment Replacement (Part No.41-988)

Motorcraft – Double Platinum Spark Plug: Enhanced Durability & Fuel Efficiency (Part No.SP-405)

Motorcraft – High-Durability Spark Plug: Reduces Misfires & Fuel Consumption (Part No.SP-479-X)

Motorcraft – Spark Plug (AGSF22WM) (Part No.SP-479)

NGK – OE Series Laser Platinum Spark Plug: Fine Wire Tip Design, PTR5C-13 (Part No.7740)

DENSO – Iridium TT Spark Plug: Ultimate Endurance and Power, 0.4mm Iridium Tip, IT16TT (Part No.4713)

Champion – Iridium Spark Plug: Maximum Performance, OE Replacement, RE10WYPB5 (Part No.9901)

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

Autolite – Double Platinum Spark Plug (Part No.APP103)

Motorcraft – Original Equipment Finewire Single Platinum Spark Plug (Part No.F1000300029MTR)

Motorcraft – Platinum Spark Plug: Enhances Durability & Reduces Misfires (Part No.SP-521)

NGK – Ruthenium HX High Ignitability Spark Plug: PSPE Tip Design, LTR7BHX (Part No.95605)

ACDelco – Double Platinum Spark Plug: Original Equipment Replacement (Part No.41-950)

DENSO – Iridium Power Spark Plug: Maximum Spark Energy, 0.4mm Iridium Tip, IT20 (Part No.5326)

NGK – OE Series Laser Iridium Spark Plug: Fine Wire Tip Design, ILTR6E11 (Part No.90117)

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

DENSO – Iridium Power Spark Plug (Part No.F1000312474ND)

NGK – Ruthenium HX High Ignitability Spark Plug: PSPE Tip Design, LTR6BHX (Part No.90495)

E3 – DiamondFIRE Automotive Spark Plug: More Power, Saves Gas (Part No.E3.53)

NGK – Iridium IX Spark Plug (Part No.F100089174NGK)

Autolite Iridium – Ir SparkPlug (Part No.AI5862)

Autolite – Single Platinum Spark Plug (Part No.AP103)

ACDelco – Double Platinum Spark Plug (Part No.41-810)

ACDelco – Double Platinum Spark Plug (Part No.41-814)

NGK – Iridium IX Spark Plug: Single Iridium Fine Wire, LTR6IX-11 (Part No.6509)

NGK – Ruthenium HX High Ignitability Spark Plug: PSPE Tip Design, LTR7BHX (Part No.95605)

E3 – DiamondFIRE Automotive Spark Plug: More Power, Saves Gas (Part No.E3.74)

NGK – OE Series Laser Platinum Spark Plug: Fine Wire Tip Design, LTR7CP13 (Part No.94862)

Autolite Iridium – Ir SparkPlug (Part No.AI5862)

DENSO – Iridium Power Spark Plug (Part No.F1000312474ND)

Motorcraft – Spark Plug (Part No.F10003269731MTR)

Autolite Iridium – Iridium XP Finewire Spark Plug: Improved Durability, More Focused Ignition (Part No.XP5862)

Motorcraft – High-Performance Spark Plug: Enhances Fuel Efficiency (Part No.SP-589)