2003 Ford Explorer Spark Plugs

Essential 2003 Ford Explorer Spark Plugs

Autolite Iridium – Iridium Ultra Finewire Spark Plug: Optimal Performance, Durability, Ignitability (Part No.AI5863)

Iridium Ultra Finewire Spark Plug: Optimal Performance, Durability, Ignitability

from

$10.99
Autolite Iridium Ultra Laser Finewire Spark Plugs are one of our brand’s most technologically advanced products. These spark plugs provide superior durability, more focused ignition with better overall ignitability for optimum performance. Autolite Spark Plugs are the best alternative to OE spark plugs, offering OE fit form and function supporting all foreign and domestic makes and models at a value price. Autolite provides the automotive aftermarket and original equipment manufacturers with the highest quality ignition products and is the leading supplier of spark plugs in the world.

Product Features:
  • Autolite Iridium Ultra is an engineered OE replacement iridium spark plug.
  • A laser-welded 0.5mm pure iridium finewire center electrode provides optimal fuel efficiency, acceleration and focused ignitability.
  • Nickel-plated shell to resist corrosion.
  • High-alumina ceramic insulator for increased strength.
  • Laser welded 0.5mm Iridium finewire center electrode.
  • Proprietary platinum sidewire technology.
  • Superior Durability: Autolite Iridium Ultra Laser Finewire Spark Plugs are designed for long-lasting performance, ensuring extended service life and reliability.
  • OE Fit and Function: Autolite Spark Plugs offer an OE fit, form, and function, making them a perfect alternative to original equipment spark plugs for all foreign and domestic makes and models.
  • High-Quality Construction: As a leading supplier of spark plugs globally, Autolite ensures the highest quality ignition products for both the automotive aftermarket and original equipment manufacturers.
  • Value Pricing: Despite their advanced technology and superior performance, Autolite Iridium Ultra Laser Finewire Spark Plugs are available at a value price, providing excellent cost-effectiveness.
See More

Autolite Iridium – Iridium XP Finewire Spark Plug: Improved Durability, More Focused Ignition (Part No.XP5363)

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
  • Double Iridium-Enhanced Alloy Technology Center Electrode: Offers improved durability and wear resistance for a longer-lasting spark plug.
  • Engineered in the USA: Designed with over 100 years of Autolite’s engineering experience for superior quality and performance.
  • Proven Track Record: Part of a legacy with over 11 billion spark plugs sold, ensuring trusted performance and reliability.
See More

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.
See More

Motorcraft – High-Durability Spark Plug: Reduces Fuel Consumption & Misfires (Part No.SP-412-X)

High-Durability Spark Plug: Reduces Fuel Consumption & Misfires

from

$4.49
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.
  • Enhanced Durability: Engineered to meet strict Ford engineering standards, these spark plugs are designed to provide long-lasting performance and reliability.
  • Reduces Fuel Consumption: Specifically matched to engines to optimize fuel efficiency, helping you save on fuel costs.
See More

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.
See More

E3 – DiamondFIRE Automotive Spark Plug: More Power, Saves Gas (Part No.E3.70)

DiamondFIRE Automotive Spark Plug: More Power, Saves Gas

from

$10.99
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. E3.70 is a 16mm, 0.860 reach plug with a taper seat. It fits Ford Triton applications from 2004 to 2008. E3.70 is a unique design that solves a problem with the original OE application. The shell is made as a single piece, as opposed to two pieces, so it resists seizing in the engine and breaking apart when being removed. 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 ground electrode is proven to increase power, reduce fuel consumption and improve hydrocarbon emissions in long-term use.

Product Features:
  • The design of the Ford Triton engine can a cause build of carbon on the spark Plug threads, which may make removal difficult. E3.70’s shell is made of a one-piece design, which means it WILL NOT break during removal.
  • 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
  • Enhanced Heat Transfer: Three legs secure the Diamond FIRE electrode to the shell, providing excellent heat transfer and creating more turbulence in the cylinder for better combustion.
  • Specific Fit for Ford Triton: The E3.70 spark plug is designed to fit Ford Triton applications from 2004 to 2008, ensuring compatibility and optimal performance for these vehicles.
See More

E3 – DiamondFIRE Automotive Spark Plug: More Power, Saves Gas (Part No.E3.62)

DiamondFIRE Automotive Spark Plug: More Power, Saves Gas

from

$7.49
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. E3.62 is a 14mm, 0.708 reach plug with a taper seat. E3.62 is the same heat range as E3.54, but has a wider gap. 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.
See More

Champion – Iridium Spark Plug: Maximum Performance, OE Replacement, RET8ZWYPB (Part No.9406)

Iridium Spark Plug: Maximum Performance, OE Replacement, RET8ZWYPB

from

$8.49
The Champion® Iridium spark plug is the ultimate element for your engine, featuring a fine-wire iridium center electrode and platinum ground electrodes for the sharpest spark focus and maximum performance. The iridium center electrode ensures maximum life, while the V-trimmed ground electrode enhances ignitability and promotes a sharper spark focus. This premium spark plug maintains a stable operating temperature under all engine loads, thanks to its Heat-Active alloy that allows the electrodes to reach optimal temperature quickly. With a tapered seat type and resistor type, the Champion Iridium spark plug is designed for superior performance and longevity.

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.
See More

DENSO – PT16TT Platinum TT Spark Plug (Part No.4511)

PT16TT Platinum TT Spark Plug

from

$5.99
Twin-Tip design enables faster flame propagation for more complete combustion.
See More

NGK – Iridium IX Spark Plug: Single Iridium Fine Wire, TR55IX (Part No.7164)

Iridium IX Spark Plug: Single Iridium Fine Wire, TR55IX

from

$11.99
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 Iridium – Iridium XP Finewire Spark Plug: Improved Durability, More Focused Ignition (Part No.XP103)

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
See More

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.
See More

Motorcraft – Spark Plug (Part No.SP-493-X)

Spark Plug

from

$9.99
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.
See More

Pulstar – Spark Plug with PlasmaCore (Part No.EF1H10)

Spark Plug with PlasmaCore

from

$14.99
Pulstar Spark Plugs use innovative plasma-assisted combustion technology to increase horsepower and torque. Plasma-assisted combustion is already used to improve engine performance in race cars, but requires complex control systems and costs nearly $2,000 per cylinder. Pulstar Spark Plugs, manufactured by Enerpulse Technologies, brings plasma-assisted combustion to consumers with a simple spark plug upgrade. Pulstar uses a patented internal capacitor, developed with the help of a US DoE laboratory, to create a high-intensity electrical pulse that ionizes the air-fuel mixture and saturates it with combustion-enhancing plasma. With its plasma-assisted combustion, Pulstar ignites fuel instantly and burns it rapidly; gaining up to 7 horsepower, 9 ft.-lbs. of torque … and, delivering wicked throttle response.
See More

Accel – Spark Plug: Ford Late V8 3-V: 1 Range Colder: 8Pk (Part No.8161C1)

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

from

$153.99
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 gapable 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
  • Unlike Iridium or Platinum plugs, the ACCEL HP plugs are gapable
  • 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!
See More

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

from

$9.99
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
See More

Motorcraft – Standard Spark Plug: Enhances Durability & Reduces Misfires (Part No.SP-412)

Standard Spark Plug: Enhances Durability & Reduces Misfires

from

$3.99
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 are designed with high-quality nickel materials for both the center and ground electrode tips. With service intervals of up to 100,000 miles and backed by Motorcraft’s Service Parts Warranty, these spark plugs ensure an exact fit for Ford, Lincoln, and Mercury vehicles while preventing false check engine lights. Motorcraft Spark Plugs are what was in the vehicle when it was manufactured, providing reliable performance 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.
  • High-Quality Nickel Materials: Constructed with high-quality nickel for both the center and ground electrode tips, these spark plugs are resistant to oxidation and arc erosion.
See More

Autolite Iridium – Iridium XP Finewire Spark Plug: Improved Durability, More Focused Ignition (Part No.XP605)

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
  • Double Iridium-Enhanced Alloy Technology Center Electrode: Offers improved durability and wear resistance.
  • Designed and Engineered in the USA: Reflects over 100 years of Autolite’s engineering experience.
  • Tapered Seat Type: Ensures a secure fit and optimal performance in compatible engines.
See More

Autolite Iridium – Iridium Ultra Finewire Spark Plug: Optimal Performance, Durability, Ignitability (Part No.AI5363)

Iridium Ultra Finewire Spark Plug: Optimal Performance, Durability, Ignitability

from

$10.99
Autolite Iridium Ultra Laser Finewire Spark Plugs are one of our brand’s most technologically advanced products. These spark plugs provide superior durability, more focused ignition with better overall ignitability for optimum performance. Autolite Spark Plugs are the best alternative to OE spark plugs, offering OE fit form and function supporting all foreign and domestic makes and models at a value price. Autolite provides the automotive aftermarket and original equipment manufacturers with the highest quality ignition products and is the leading supplier of spark plugs in the world.

Product Features:
  • Autolite Iridium Ultra is an engineered OE replacement iridium spark plug.
  • A laser-welded 0.5mm pure iridium finewire center electrode provides optimal fuel efficiency, acceleration and focused ignitability.
  • Nickel-plated shell to resist corrosion.
  • High-alumina ceramic insulator for increased strength.
  • Laser welded 0.5mm Iridium finewire center electrode.
  • Proprietary platinum sidewire technology.
  • Superior Durability: Autolite Iridium Ultra Laser Finewire Spark Plugs are designed to last longer, providing extended service life compared to standard spark plugs.
  • OE Fit and Function: Autolite Spark Plugs are the best alternative to original equipment (OE) spark plugs, offering perfect fit, form, and function for all foreign and domestic makes and models.
  • High-Quality Construction: As a leading supplier of spark plugs globally, Autolite ensures the highest quality ignition products for both the automotive aftermarket and original equipment manufacturers.
  • Value Pricing: Despite their advanced technology and superior performance, Autolite Iridium Ultra Laser Finewire Spark Plugs are available at a value price, making them an economical choice for vehicle maintenance.
See More

Dorman – Help – Spark Plug Non-Foulers – 14mm Tapered Seat (Part No.42008)

Spark Plug Non-Foulers - 14mm Tapered Seat

from

$9.99
This spark plug non fouler is designed for easy installation on specified vehicles to protect spark plugs from fouling and damage. It is engineered for durability and reliable performance.

Product Features:
  • Direct replacement – this spark plug non fouler is designed for easy installation to protect spark plugs from fouling and damage on specified vehicles
  • Ideal solution – this non-fouler preserves spark plug life and is a reliable replacement for an original non-fouler that has failed due to corrosion
  • Durable construction – made from quality components to ensure reliable performance and a long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
See More

Champion – Double Platinum & Power Spark Plug Exceptional Perf OE Replacement RS14PYPB5 (Part No.7940)

Double Platinum & Power Spark Plug Exceptional Perf OE Replacement RS14PYPB5

from

$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.
See More

Champion – Copper Plus Spark Plug: Dependable Performance, OE Replacement, RS9YC (Part No.304)

Copper Plus Spark Plug: Dependable Performance, OE Replacement, RS9YC

from

$3.99
The Champion Spark Plug Copper Plus Spark Plug RS9YC is a reliable and high-performing OE replacement spark plug. It features a copper core center electrode that provides accurate control of heat range, ensuring optimal performance and fuel efficiency. The spark plug is built to ISO and SAE standards, ensuring proven performance and durability. The center electrode tip material is made of nickel, while the resistor type is designed to reduce electromagnetic interference. The tapered seat type ensures a secure fit and easy installation. Overall, the Champion Spark Plug Copper Plus Spark Plug RS9YC is a dependable choice for those seeking a high-quality spark plug replacement that delivers consistent performance and fuel efficiency.
  • Copper core center electrode allows for accurate control of heat range for longer life
  • Built to ISO and SAE standards for proven performance
  • Built to ISO and SAE standards for proven performance
  • Dependable Performance: The Copper Plus Spark Plug is designed to provide reliable and consistent performance, ensuring that your vehicle runs smoothly and efficiently.
  • OE Replacement: This spark plug is an exact replacement for the original equipment (OE) part, ensuring a perfect fit and optimal performance.
  • Nickel Center Electrode Tip Material: The center electrode tip of this spark plug is made from nickel, which provides superior conductivity and durability compared to other materials.
  • Tapered Seat Type with Resistor: The tapered seat type of this spark plug ensures a secure fit in the engine block, while the built-in resistor helps reduce electromagnetic interference for improved performance.
  • See More

    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
    See More

    DENSO – Iridium TT Spark Plug: Ultimate Endurance and Power, 0.4mm Iridium Tip, last 100K+ Miles, ITV20TT (Part No.4719)

    Iridium TT Spark Plug: Ultimate Endurance and Power, 0.4mm Iridium Tip, last 100K+ Miles, ITV20TT

    from

    $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
    See More

    NGK – G-Power Spark Plug: Single Platinum Tip Design, TR55-1GP (Part No.7159)

    G-Power Spark Plug: Single Platinum Tip Design, TR55-1GP

    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
    • Enhanced Performance: Provides better performance over conventional nickel spark plugs, making it a smart choice for vehicle maintenance.
    • Tapered Seat Type: Designed with a tapered seat type for a secure fit and optimal performance.
    See More

    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
    See More

    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
    See More

    Autolite – Copper Spark Plug: Delivers Quick Starts, Good Fuel Economy, Smooth Acceleration (Part No.605)

    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, ensuring quick starts and smooth acceleration. The specially engineered high nickel alloy center and ground electrode provide extended life, while the high alumina ceramic offers high dielectric strength. Additionally, the leak-proof, heat-fused internal seal enhances durability, and the multi-rib insulator prevents flash-over. The tapered seat type ensures a perfect fit, making these spark plugs a reliable choice for your vehicle.

    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
    • Perfect Fit: The tapered seat type ensures a perfect fit, making installation easy and reliable for your vehicle.
    See More

    2003 Ford Explorer Spark Plugs

    Maybe you’re in the middle of a full rebuild of that 2003 Ford Explorer. Maybe you just need a couple of Spark Plugs. Either way, Advance Auto Parts has 41 different Spark Plugs in our inventory ranging from $2.99 to $18.99. That means you can find the exact parts or products you need to keep that 2003 Ford Explorer running smoothly.

    Spark Plugs are only as good as their brand. We stock 7 different brands to make sure you have plenty of trusted parts to choose from for your 2003 Ford Explorer. 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 2003 Ford Explorer, but don’t take our word for it – read our customer ratings and reviews and buy with confidence. Out of the 13,417 reviews in this category, some of the top rated parts include Double Platinum Spark Plug: Platinum Firing, Superior Durability, Longer Life with 4.8 stars and PT16TT Platinum TT Spark Plug with 4.6 stars.

    So if you’re in the market for aftermarket Spark Plugs to keep your 2003 Ford Explorer 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 2003 Ford Explorer Last

    Simple repair, complete replacement, or a full rebuild. No matter the job, your 2003 Ford Explorer 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 Explorer the best it can be. Be sure to browse some of our top Spark Plugs brands and parts.

    FAQs for 2003 Ford Explorer Spark Plugs

    What are the most purchased Spark Plugs for the 2003 Ford Explorer?

    Out of 41 Spark Plugs for the 2003 Ford Explorer, the most popular in our inventory are:
    Iridium XP Finewire Spark Plug: Improved Durability, More Focused Ignition
    from $9.99
    This product is not rated
    Iridium XP Finewire Spark Plug: Improved Durability, More Focused Ignition
    Spark Plugs

    What are the top-rated 2003 Ford Explorer Spark Plugs?

    Top-rated Spark Plugs for your 2003 Ford Explorer based on customer reviews/ratings are:
    PT16TT Platinum TT Spark Plug
    from $5.99
    (90)
    PT16TT Platinum TT Spark Plug
    “On line”
    Platinum Spark Plug: Fires Cleaner, Easier Starts, Quicker Acceleration
    from $4.79
    (82)
    Platinum Spark Plug: Fires Cleaner, Easier Starts, Quicker Acceleration
    “My van is running, so I assume the plugs are workin’ fine. I’ll update you at 50,000 miles.”