2003 Ford Explorer Ignition and Tune-Up Products

Below you will find various in-demand Ford Ignition and Tune-Up Products, components and accessories for your 2003 Explorer. Advance Auto Parts has popular Explorer parts like Ignition Switches, Ignition Wires, Ignition Boots and more. You’ll also find aftermarket and OEM Ignition and Tune-Up Products for other Explorer model years including 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023 and more. Select a category of 2003 Ford Explorer Ignition and Tune-Up Products below and start saving instantly.

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Popular 2003 Ford Explorer Ignition and Tune-Up Products Categories

Direct Ignition Coil Kits

Standard Spark Plug Wires

Knock Sensors

Ignition Module and Controls

Ignition Starter Switches

Ignition Pulsator Rings

Ignition Control Unit Harness

Ignition Switch Connectors

Essential Ignition and Tune-Up Products for 2003 Ford Explorers

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$232.99

MSD Street Fire coils will improve the performance of your late model GM or Ford vehicle. The E-core dual connector and TFI coils feature epoxy-filled construction and 48,000 maximum volts. They mount directly in place of the factory coil and accept the factory connectors for an easy installation.

Product Features:

Increased Spark Energy Over The Entire RPM Range Of The Engine
Coils Bolt In Place Of The Factory Units
Accepts OEM Connections For A Simpler Installation

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$511.99

ACCEL Super Coils feature advanced bobbin technology, highly specialized silicon magnetic steel cores, optimized windings, proper resistance and engineered turn ratios that deliver a high performance, quality coil. Specialized high temperature epoxy resists shock and vibration, while increasing thermal conductivity. These are direct high performance replacements for OEM coils.

Product Features:

Specialized silicone magnetic steel cores are surrounded by precision wrapped windings using advanced bobbin technology which helps maintain the proper resistance and turn ratios necessary to deliver improved performance spark
Direct Plug In Replacement results in a Direct OE Fit
OBD ll Safe, so you won’t be throwing codes, just sparks

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$60.99

Product Features:

PERFECT FIT FOR YOUR VEHICLE: Built to OEM tolerances with OE quality or better materials
BUILT TO LAST: Outer Jacket built to withstand temperatures greater than 250 degrees Celsius, inner insulation EPDM or silicone for best dielectric strength
STAINLESS STEEL TERMINALS: Provide the highest possible retention to ensure positive connections through the life of the set
CYLINDER LEAD ID: Cylinder lead identification tags where possible make installation easier
LIMITED WARRANTY: See package for details

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$62.99

Product Features:

SAEJ2031 Class E cable resist heat (428 Deg. F), cold (-104 Deg. F), electrical interference, abrasion and oil.
Stainless steel magnetic winding delivers maximum voltage to the spark plug for more powerful, and longer spark resulting in optimum engine performance while reducing the chance for misfire, and eliminating radio static.
100% Pure silicone external insulation resists oil penetration, for lifetime protection against wire set failure.
EPDM inner insulation stops power-robbing voltage leaks.
With Magnetic-impregnated Kevlar internal conductors – durable and break resistant
Engineered to meet OEM tolerances using variable pitch wire winding, creating better resistance to electric magnetic interference (E.M.I resistance).
Excellent interference suppression and consistent performance
Easy lock terminals for more convenient installation.
Thick silicon outer jacket for excellent heat resistance. Insulating EPDM based compound inner jacket helps minimize voltage drop and enhance durability.
Broad coverage available for most vehicles on the road today
Include grease pack to ensure easy installation and removal

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$7.99

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

Product Features:

Champion Iridium – Maximum Performance. Premium Spark Plug
Iridium center electrode delivers maximum life
Fine-wire center electrode and V-trimmed for greater ignitability
V-trimmed ground electrode promotes sharper spark focus
Maintains stable operating temperature under all engine loads
Heat-Active alloy allows electrodes to reach optimal temperature quickly

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$4.99

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

Product Features:

Platinum Power- Premium Spark Plug. Powerful Performance.
Platinum center electrode for long life
Fine-wire center electrode for greater ignitability
V-trimmed ground electrode promotes sharper spark focus
Heat-Active alloy allows electrodes to reach optimal temperature
Platinum tipped center wire resists wear and helps to maintain proper gap spec over life of the plug

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$8.99

Carquest Premium spark plug boots are engineered to restore ignition boot reliability and performance. They are designed to meet or exceed original equipment (O.E.) specifications for fit, form and function. Our spark plug boots offer excellent heat resistance as well as maximum protection against spark loss. Carquest Premium spark plug boots are built with a durable silicone compound for resistance to high heat and abrasion, resulting in a longer-lasting ignition repair.

Product Features:

Product Features:

OE design provides an exact fit for your application
Provides excellent heat resistance as well as maximum protection against spark loss
Durable silicone compound for resistance to high heat or abrasion
Spring included with the spark plug boot
Design for direct compatibility
Multipack provides one time replace all COP for better deal

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$112.99

The traditional ACCEL combination of yellow wire and red spark plug boots has been added to these SuperStock Spiral Core 5000 Series wire sets, which feature color-matched wire and spark plug boots in blue, black, and red. With only 500 ohms/ft. of resistance, more ignition energy can reach the spark plug, producing a longer-lasting, hotter spark flame kernel. The results is higher performance through improved efficiency, quicker throttle response, and reduced emissions. This 8mm wire’s double silicone construction is rated to 550 degrees F. The high-gloss wire jacket resists moisture, chemicals, and heat extremes for longer life and great looks. The fiberglass braid adds greater pull strength and terminal retention, while the stainless steel spark plug terminals provide excellent long life, electrical conductivity, and corrosion resistance. Both universal and custom-fit applications are available for early and late model cars and trucks.

Product Features:

500 Ohms/ft Of Resistance
550 F Rated Silicone Jacket
Stainless Steel Plug Terminals
High RFI Suppression For Street And Strip Use
Universal And Import Coverage
High-strength Fiberglass Braid Construction
Pre And Post HEI Vehicles
8mm High Gloss Silicone Jacket

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$972.99

DIS-4 is capable of firing up to four coil packs or four individual coils. Each control delivers full power capacitive discharge sparks from idle through racing rpm. Below 3,000 rpm there is a series of multiple sparks that last for up to 20 degrees of crankshaft rotation to improve idle, starting and throttle response. The adjustable features of the DIS ignitions have also been upgraded with rotary dials. These provide easier, and more precise adjustments of the overrev limiter and the hole shot rev limit. Also, there is now a step retard that can be wired directly to a nitrous system or switch for activation. For use on 6 or 8 cylinder engines with two, three or four coil packs.

Product Features:

Two Step Rev Control
Step Retard
LED Monitor
Features Are Adjustable w/Rotary Switches

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$236.99

CARQUEST Ignition Modules are built by an ignition systems manufacturer with expertise in the entire vehicle spark system.

Product Features:

CARQUEST Ignition Modules creates and refines the timing of the engine using various sensors and readings throughout the spark system in order to create an efficiently running engine.
CARQUEST Ignition Modules use current and voltage limiting circuitry in order to prevent the ignition coil from over voltage/current. Over voltages can allow for coils to create excessive heat which can damage to the ignition module resulting in check eng
CARQUEST Ignition Modules are 100% individually tested for all product functionalities including over voltage, timing and dwell.

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$24.99

This ignition harness is designed to match the fit and function of the original harness on specified applications, and is engineered for reliable performance and durability.

Product Features:

Direct replacement – this ignition harness is designed to match the fit and function of the original harness on specified applications
Ideal solution – this harness is a reliable replacement for an original harness that is missing, failed or damaged due to corrosion
Durable construction – this part is made from quality materials to ensure reliable performance and a long service life
Trustworthy quality – designed in the United States and backed by more than a century of automotive aftermarket excellence

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$195.99

Using MSD’s DIS-4 ignition systems on your coil-on-plug Ford has always been a great upgrade, but honestly, the wiring poses quite a challenge. To ease this install, we now offer a wiring harness kit that’ll make the install nearly a direct plug-in. The harness provides a splice-free installation with connectors that plug directly into the factory unit. They even have corresponding wire colors. When used in conjunction with two DIS-4 ignitions and four dual ignition Adapters, PN 89121, your coil-on-plug Ford will receive all the spark it needs plus a two-step rev limit and step retard. And the best part is wiring will only take about an hour.

Product Features:

Easily install two DIS-4 Ignitions on late model Ford Engines
Easy Connections w/No Splicing Or Cutting Into Factory Wiring
Wiring the system will take only an hour
Multiple direct plug in connectors
Wiring the system will only take and hour

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$37.99

This ignition pulsator ring is designed to match the fit and function of the original ring on specified vehicles, and is engineered for durability and reliable performance.

Product Features:

Direct replacement – this ignition pulsator ring is designed to match the fit and function of the original ring on specified vehicles
Ideal solution – this ring is a reliable replacement for an original part that is damaged or has failed due to fatigue
Durable construction – this ring is 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

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$32.99

Carquest Premium Vehicle Solutions provides high-quality solutions for a wide range of applications. The Ignition Switch allows for reliable control of the vehicle’s electrical systems and engine start-up, enhancing convenience and ensuring consistent performance during operation. Engineered for maximum performance and durability, our products are built to excel in even the most demanding conditions, ensuring reliable operation and long-lasting value.

Product Features:

Durable Construction: Designed with high-quality materials to withstand harsh environmental conditions, ensuring long-lasting performance in extreme temperatures, vibrations, and moisture exposure.
Precision Engineering: Accurate sensing and switching capabilities provide reliable performance, reducing the risk of malfunctions and improving vehicle safety and efficiency.
Easy Installation & Maintenance: Designed for quick installation and minimal upkeep, reducing downtime and repair costs for both manufacturers and consumers.
Fit/Form/Function: Each vehicle electronic component is engineered to meet or surpass OEM standards, ensuring precise fit, optimal functionality, and reliable performance.

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$32.99

Durable Construction: Designed with high-quality materials to withstand harsh environmental conditions, ensuring long-lasting performance in extreme temperatures, vibrations, and moisture exposure.
Precision Engineering: Accurate sensing and switching capabilities provide reliable performance, reducing the risk of malfunctions and improving vehicle safety and efficiency.
Easy Installation & Maintenance: Designed for quick installation and minimal upkeep, reducing downtime and repair costs for both manufacturers and consumers.
Fit/Form/Function: Each vehicle electronic component is engineered to meet or surpass OEM standards, ensuring precise fit, optimal functionality, and reliable performance.

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$70.99

Durable Construction: Designed with high-quality materials to withstand harsh environmental conditions, ensuring long-lasting performance in extreme temperatures, vibrations, and moisture exposure.
Precision Engineering: Accurate sensing and switching capabilities provide reliable performance, reducing the risk of malfunctions and improving vehicle safety and efficiency.
Easy Installation & Maintenance: Designed for quick installation and minimal upkeep, reducing downtime and repair costs for both manufacturers and consumers.
Fit/Form/Function: Each vehicle electronic component is engineered to meet or surpass OEM standards, ensuring precise fit, optimal functionality, and reliable performance.

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$99.99

Motorcraft Plug Wires are Manufactured of premium-quality materials to strict Ford Engineering standards. High-Dielectric Insulation helps maintain and control voltage delivery while reducing Radio Frequency Interference. EPDM/Silicone wire jacket, spark plug & coil/ distributor insulators help protect against oil and high temperatures. Optimized wire lengths help minimize part numbers while still providing proper fit. Designed and Tested to Stringent Ford Standards.

Product Features:

Backed by Motorcraft’s Service Parts Warranty
Designed for long life – key life durability testing (equivalent to 10 years/150,000 miles) is conducted in addition to on-vehicle durability testing.
Optimized wire lengths help minimize part numbers while still providing proper fit.
Wires are optimum lengths for easy installation.
EPDM/Silicone wire jacket, spark plug AND coil / distributor insulators help protect against oil and high temperatures.
Motorcraft ignition components help prevent false check engine lights.

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$53.99

Carquest Premium spark plug boot sets are engineered to restore ignition boot reliability and performance. They are designed to meet or exceed original equipment (O.E.) specifications for fit, form and function. Our spark plug boots offer excellent heat resistance as well as maximum protection against spark loss. Carquest Premium spark plug boot sets are built with a durable silicone compound for resistance to high heat and abrasion, resulting in a longer-lasting ignition repair. Carquest Premium spark plug boot sets include all boots needed for each vehicle application for a complete tune-up repair.

Product Features:

Product Features:

Complete set of boots for a complete tune-up and better value
OE design provides an exact fit for your application
Provides excellent heat resistance as well as maximum protection against spark loss
Durable silicone compound for resistance to high heat or abrasion
Spring included with the coil boot
Design for direct compatibility

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$112.99

JBA PowerCables ignition wires are less than half the resistance of most factory wires, which frees sparkenergy and increases performance! Get as much as 5+ hp gain with JBA PowerCables as tested by CarCraft Magazine.

Product Features:

JBA Performance Exhaust W06339 Ignition Wires 90-96 Ranger/Explorer 4.0L Blue
Extra thick diameters for improved under hood appearance

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$36.99

Bosch OE quality knock sensors for optimum engine protection and fuel consumption reduction up to 9%

Product Features:

Bosch OE quality knock sensors for optimum engine protection
Bosch OE quality knock sensors improve combustion efficiency and reduce fuel consumption up to 9%
Bosch OE quality knock sensors increase torque up to 5%
Bosch OE quality knock sensors enable the use of multiple quality fuels with various anti-knock properties

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$87.99

Carquest Premium knock sensors are designed to perform in harsh engine environments and meet or exceed original equipment (O.E.) specifications. Carquest Premium knock sensors are built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry. We utilize advanced technology to design sensors that are, in many cases, stronger than OE parts. Carquest Premium knock sensors undergo extensive validation testing to ensure long-lasting performance and reliability. Carquest Premium knock sensors are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.

Product Features:

Designed to meet or exceed OE specifications for fit, form and function
Trivalent iridescent chromate plating prevents corrosion
Silicone seals prevent moisture intrusion preventing false codes and sensor failure
Wiring harnesses utilize high-temperature insulation when applicable
Extensive design validation testing and 100% end-of-line tested
Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413

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$33.49

Delphi’s ever growing portfolio of high quality vehicle sensors are backed by stringent OE development and product validation methods. We offer a wide range of sensors, including ABS, camshaft, crankshaft, knock, EGT, MAP, temperature, throttle position, and vehicle speed sensors for a variety of vehicle applications. All of our sensors are tested and calibrated to OE standards, ensuring accurate readings, which helps to reduce comebacks.

Product Features:

Delphi knock sensors help maximize engine performance with all fuels
Delphi knock sensors prevent against engine damage from pre ignition knocking
Calibrated for a wide variety of frequencies to detect shifts, and adjust to provide accurate signals to help maximize engine performance
Delphi knock sensors are sealed to withstand humidity, salt spray, and automotive fluids
Ground isolated design with 2 wire shielded harness helps protect the sensor signal from electro magnetic interference (EMI)
Self generating piezoelectric design requires no power to the sensor

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$56.99

Carquest Premium ignition coils meet or exceed original equipment (OE) specifications and are developed by top OE/OES manufacturers to ensure superior performance. All of our Carquest Premium ignition coils are developed by IATF 16949 certified manufacturers for consistent durability and long-lasting performance. These ignition coils use high-quality components and will utilize optimized designs on applications where the OE ignition coil had frequent failures. We require stringent testing standards to ensure proper fit and performance for each application and stand behind our Carquest Premium ignition coils with an industry-leading warranty (limited). Carquest Premium ignition coils are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.

Product Features:

Built by IATF 16949 certified manufacturers for consistent durability
Coil drivers match OE for current limit, electrostatic discharge (ESD) protection and multi-spark
Segmented secondary bobbins to distribute high voltage and prevent shorting
Extensive design validation testing to ensure long-lasting reliability
100% end-of-line tested to ensure proper performance
Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413

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$95.99

Every single Delphi ignition coil is designed and endurance tested using high quality materials. This ensures fast starts, consistent engine performance and optimized fuel efficiency. We makes more than 10 million ignition coils for North America each year, and each one is engineered to OE design specifications for vehicles from Ford, Toyota, Nissan, Lexus, GM, Mazda, Chrysler, Subaru, Acura and more.

Product Features:

Delphi coils provide OE performance, durability and electromagnetic capacity level requirements
Delphi ignition coils are designed to insert power into spark plugs to ensure fast starts, consistent engine performance and optimized fuel efficiency
Delphi uses smart winding process techniques to controls wire lengths, keeping voltage the same
We manufacture our ignition coils with a high quality wire coating that resists imperfections that lead to failure

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$295.99

Carquest Premium ignition coil sets meet or exceed original equipment (OE) specifications and are developed by top OE/OES manufacturers to ensure superior performance. All of our Carquest Premium ignition coil sets are developed by IATF 16949 certified manufacturers for consistent durability and long-lasting performance. These ignition coils use high-quality components and will utilize optimized designs on applications where the OE ignition coil had frequent failures. We require stringent testing standards to ensure proper fit and performance for each application and stand behind our Carquest Premium ignition coil sets with an industry-leading warranty. Carquest Premium ignition coil sets are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.

Product Features:

Built by IATF 16949 certified manufacturers for consistent durability
Coil drivers match OE for current limit, electrostatic discharge (ESD) protection and multi-spark
Segmented secondary bobbins to distribute high voltage and prevent shorting
Extensive design validation testing to ensure long-lasting reliability
100% end-of-line tested to ensure proper performance
Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413

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$61.99

Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.

Product Features:

Carquest electrical connectors meet or exceed OE wire gauge, insulation, and terminal material requirements.
WVE electrical connectors meet or exceed OE wire gauge, insulation, and terminal material requirements.
Product constructed to meet all design and operating characteristics as intended by the manufacturer.
OE specified wire gauge to ensure a reliable electrical connection
Designed to meet or exceed OE specifications in form, fit and function

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$24.99

Carquest electrical connectors meet or exceed OE wire gauge, insulation, and terminal material requirements.
WVE electrical connectors meet or exceed OE wire gauge, insulation, and terminal material requirements.
Product constructed to meet all design and operating characteristics as intended by the manufacturer.
OE specified wire gauge to ensure a reliable electrical connection
Designed to meet or exceed OE specifications in form, fit and function

Upgrade your 2003 Ford Explorer with Top-Quality Ignition and Tune-Up Products

When it comes to maintaining or upgrading your 2003 Ford Explorer, nothing is more important than using high-quality OEM or aftermarket parts that you can trust. Whether you’re repairing damage to your Ford or enhancing its overall performance, Ignition and Tune-Up Products are key to keeping your Explorer functioning at its best. At Advance Auto Parts, we offer a wide selection of 79 Ignition and Tune-Up Products for the 2003 Ford Explorer, designed to meet your needs without breaking the bank. From Ignition Switch replacements to Ignition Wires upgrades, we’ve got you covered with parts that fit your vehicle perfectly and ensure long-lasting performance.

Affordable Prices and Wide Selection

Shopping for Ignition and Tune-Up Products for any vehicle can be a hassle, especially if you’re on a budget. But with Advance Auto Parts, you can find high-quality Ignition and Tune-Up Products for your 2003 Ford Explorer at great prices. Our Ignition and Tune-Up Products inventory for this model ranges from just $2.99 to $972.99, with an average price of $63.67. Our 79 Ignition and Tune-Up Products in stock come from 15 trusted brands, so you’re sure to find the right part for your 2003 Ford Explorer without overspending.

Top Brands and High Customer Satisfaction

Advance Auto Parts takes pride in offering only the best brands in the automotive industry. For your 2003 Ford Explorer, we stock popular OEM and aftermarket Ignition and Tune-Up Products from top names like Motorcraft, NGK, Autolite, and more. Motorcraft Ignition and Tune-Up Products start at just $4.99 and boast an impressive 4.8 stars average rating from customers. NGK and Autolite also bring quality to the table, with Ignition and Tune-Up Products available starting at $4.29, and at an average 4.8 stars rating. With 14,081 customer reviews and counting, our 2003 Ford Explorer Ignition and Tune-Up Products have a strong track record of reliability, ensuring you can trust your purchase.

Explore Related Parts and More

While you’re here, don’t forget to check out other essential categories that go hand in hand with Ignition and Tune-Up Product upgrades. Explore related part types like Batteries and Chargers, Oil and Lubricants and more to make sure your 2003 Ford Explorer is always ready to roll. We’re committed to providing you with everything you need to keep your Explorer in top shape, all in one place. Start shopping confidently below for your 2003 Ford Explorer!

Best-Selling Ignition Switches for 2003 Ford Explorers

Enhance the driving experience in your Ford with 3 quality Ignition Switch components, starting at $61.99.

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$70.99

Durable Construction: Designed with high-quality materials to withstand harsh environmental conditions, ensuring long-lasting performance in extreme temperatures, vibrations, and moisture exposure.
Precision Engineering: Accurate sensing and switching capabilities provide reliable performance, reducing the risk of malfunctions and improving vehicle safety and efficiency.
Easy Installation & Maintenance: Designed for quick installation and minimal upkeep, reducing downtime and repair costs for both manufacturers and consumers.
Fit/Form/Function: Each vehicle electronic component is engineered to meet or surpass OEM standards, ensuring precise fit, optimal functionality, and reliable performance.

from

$85.99

The only parts recommended by Ford Motor Company for Ford, Lincoln and Mercury vehicles.

Product Features:

Direct-fit, OE replacement parts – identical to factory installed parts. Robust design helps provide long operating life and excellent performance.
All OE switch functions are maintained. Factory connectors help ensure a solid, positive connection. Provided factory mounting points ensure easy installation – new gaskets and attaching hardware is included, where applicable.

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$61.99

Carquest electrical connectors meet or exceed OE wire gauge, insulation, and terminal material requirements.
WVE electrical connectors meet or exceed OE wire gauge, insulation, and terminal material requirements.
Product constructed to meet all design and operating characteristics as intended by the manufacturer.
OE specified wire gauge to ensure a reliable electrical connection
Designed to meet or exceed OE specifications in form, fit and function

Most Popular 2003 Ford Explorer Ignition Wires

Customize your Ford with 3 Ignition Wires products like Standard Spark Plug Wires, all priced under $46.99.

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from

$46.99

Product Features:

SAEJ2031 Class E cable resist heat (428 Deg. F), cold (-104 Deg. F), electrical interference, abrasion and oil.
Stainless steel magnetic winding delivers maximum voltage to the spark plug for more powerful, and longer spark resulting in optimum engine performance while reducing the chance for misfire, and eliminating radio static.
100% Pure silicone external insulation resists oil penetration, for lifetime protection against wire set failure.
EPDM inner insulation stops power-robbing voltage leaks.
With Magnetic-impregnated Kevlar internal conductors – durable and break resistant
Engineered to meet OEM tolerances using variable pitch wire winding, creating better resistance to electric magnetic interference (E.M.I resistance).
Excellent interference suppression and consistent performance
Easy lock terminals for more convenient installation.
Thick silicon outer jacket for excellent heat resistance. Insulating EPDM based compound inner jacket helps minimize voltage drop and enhance durability.
Broad coverage available for most vehicles on the road today
Include grease pack to ensure easy installation and removal

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$21.99

Motorcraft Ignition Boots are engineered to provide original equipment performance and reliability. All Motorcraft parts undergo rigorous lab and real-world tests in order to meet strict Ford engineering standards. Terminal ends are designed to help ensure they do not separate from the cable under normal service conditions. High dialectic insulation helps maintain and control voltage delivery while reducing radio frequency interference. The only parts recommended by Ford Motor Company for Ford, Lincoln and Mercury vehicles

Product Features:

Backed by Motorcraft’s Service Parts Warranty
Designed for long life – key life durability testing (equivalent to 10 years/150,000 miles) is conducted in addition to on-vehicle durability testing.
Boots must pass submerged and pressurized leak tests, as well as low temperature cycle tests.
Durability tests subject boots to 225,000 performance cycles including temperature extremes from minus 40 degrees F to 275 degrees F.
Motorcraft ignition components help prevent false check engine lights.

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$8.99

Product Features:

OE design provides an exact fit for your application
Provides excellent heat resistance as well as maximum protection against spark loss
Durable silicone compound for resistance to high heat or abrasion
Spring included with the spark plug boot
Design for direct compatibility
Multipack provides one time replace all COP for better deal

Top Picks for 2003 Ford Explorer Ignition Boots

Upgrade Ford Explorers with top-quality Ignition Boots parts, including 3 OEM and aftermarket selections for your 2003 model.

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from

$53.99

Product Features:

Complete set of boots for a complete tune-up and better value
OE design provides an exact fit for your application
Provides excellent heat resistance as well as maximum protection against spark loss
Durable silicone compound for resistance to high heat or abrasion
Spring included with the coil boot
Design for direct compatibility

from

$48.49

Product Features:

PERFECT FIT FOR YOUR VEHICLE: Built to OEM tolerances with OE quality or better materials
BUILT TO LAST: Outer Jacket built to withstand temperatures greater than 250 degrees Celsius, inner insulation EPDM or silicone for best dielectric strength
STAINLESS STEEL TERMINALS: Provide the highest possible retention to ensure positive connections through the life of the set
CYLINDER LEAD ID: Cylinder lead identification tags where possible make installation easier
LIMITED WARRANTY: See package for details

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$57.99

Pc Cop Boots 97-11 Ford 8-Cyl

In-Demand Spark Plugs for 2003 Ford Explorers

Select from 40 premium Spark Plugs parts for your 2003 Ford Explorer, with prices ranging from $2.99 to $23.99.

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$9.29

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 with service intervals of up to 100,000 miles, these 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, and their ignition components help prevent false check engine lights. Featuring platinum center and ground electrode tips, these spark plugs deliver the performance, reliability, and confidence you expect.

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 Platinum Tips: Featuring platinum center and ground electrode tips, these spark plugs offer superior performance and resistance to oxidation and arc erosion.

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$4.29

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

Product Features:

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

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$14.99

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

Product Features:

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

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$6.99

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

Product Features:

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

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$4.99

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

Product Features:

Motorcraft spark plugs are matched to specific engines to provide enhanced durability, eliminate misfires, reduce fuel consumption and optimize emissions.
Backed by Motorcraft’s Service Parts Warranty
Exact fit for Ford, Lincoln and Mercury vehicles
Resistant to oxidation and arc erosion.
Multi-rib insulator protects against misfire.
Service intervals of up to 100,000 miles.
Motorcraft Spark Plugs are designed with high quality materials to provide reliable performance for almost any application.
Motorcraft Spark Plugs are what was in the vehicle when it was manufactured
Motorcraft ignition components help prevent false check engine lights.
Reduces Fuel Consumption: Specifically matched to engines to optimize fuel efficiency, helping you save on fuel costs.

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$4.29

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

Product Features:

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

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$6.99

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

Product Features:

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

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$3.49

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

Product Features:

Patented U-groove ground electrode design fires leaner mixtures than conventional plugs
Precision machine-rolled threads reduce seizing and cross-threading in delicate aluminum heads
Wide range of part numbers for thousands of applications, including classic and collector cars
Lasts twice as long as most conventional plugs
100 percent pre-fired to assure reliable operation
U-Groove Conventional
Durable Nickel Center Electrode Tip: Provides long-lasting performance and improved efficiency in emission gas purification and fuel consumption.

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$11.49

ACDelco Professional Double Platinum Spark Plugs are premium aftermarket plugs, and are a high quality replacement for many vehicles on the road today. 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.

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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$4.79

Copper Plus spark plug delivers dependable performance and durability, making it an ideal choice for maintaining your vehicle’s efficiency. Featuring a copper core center electrode, it ensures precise heat control for extended lifespan and consistent wear. The nickel-tipped center and ground electrodes enhance conductivity while resisting corrosion, ensuring reliable ignition under various conditions. Designed to meet ISO and SAE Standards, this spark plug guarantees proven performance and compatibility with standard replacement needs. Its tapered seat type and built-in resistor further optimize functionality, making it a trusted solution for smooth engine operation. Invest in this high-quality spark plug for superior reliability and value.

Product Features:

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

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$2.99

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

Product Features:

The copper core center electrode aids in thermal control and improves resistance to fouling.
Its specially engineered high nickel alloy center and ground electrode provides extended life.
The high alumina multi-rib ceramic insulator provides thermal conductivity and superior insulation for increased strength.
Designed with a nickel-plated shell that is corrosion resistant to provide increased durability for extended periods.
Smooth Acceleration: Designed to provide smooth acceleration, enhancing your driving experience.
Good Fuel Economy: These spark plugs help in maintaining good fuel economy, making your vehicle more efficient.
Tapered Seat Type: Features a tapered seat type for optimal fit and performance.

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$7.49

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

Product Features:

ACTUAL OE or EQUIVALENT DESIGN: OEM quality construction nickel alloy center electrode with V-groove provides consistent performance
RECOMMENDED USAGE: Best for vehicles with OE nickel alloy plugs, not recommended on vehicles with factory precious metal plugs
NGK’s OE CERAMIC TECHNOLOGY: High grade alumina silicate ceramic creates a stronger insulator for optimal dielectric performance
SOLID COPPER CORE: 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges
COLD-ROLLED THREADS: Prevents cross-threading and damage to cylinder heads
TRIVALENT METAL PLATING: Delivers superior anti-corrosion and anti-seizing properties, ensuring ease of installation and removal
Enhanced Ignitability: The V-cut nickel alloy center electrode and concave ground electrode design of NGK V-Power spark plugs provide quicker starts and smoother idle.
OE Application Specific: Engineered specifically for Original Equipment (OE) applications, ensuring compatibility and reliable performance.
V-Groove Tip Design: The unique V-Groove tip design of the TR55 model enhances ignitability and overall engine performance.
Lower Emissions: The NGK Laser Platinum Spark Plug contributes to lower emissions, supporting a cleaner and more environmentally friendly driving experience.

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$8.49

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

Product Features:

SINGLE PLATINUM TIP: Fine wire 0.6 millimeter platinum tip center electrode ensures improved durability and a consistently stable spark
PLATINUM ALLOY: G-Power platinum provides exceptional value with increased performance and longer service intervals than factory nickel plugs
TRAPEZOIDAL CUT GROUND ELECTRODE: Reduces quenching design produces improved ignitability and performance
SOLID COPPER CORE: 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges
COLD-ROLLED THREADS: Prevents cross-threading and damage to cylinder heads
RECOMMENDED USAGE: Lower cost alternative to double precious metal spark plugs or as an upgrade to OE nickel alloy spark plugs
Improved Fuel Efficiency: Designed to offer better fuel efficiency, the NGK G-Power Platinum spark plugs help you save on fuel costs.
Lower Emissions: These spark plugs contribute to lower emissions, making them an environmentally friendly choice.
Faster Starts and Quicker Acceleration: Experience faster starts and quicker acceleration with the advanced design of the NGK G-Power Platinum spark plugs.

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$4.99

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

Product Features:

Engineered with a platinum firing tip that prevents gap erosion for longer service life.
Its high alumina ceramic insulator provides thermal conductivity and superior insulation for increased strength.
The multi-rib insulator prevents flash-over.
Designed with a nickel-plated shell that is corrosion resistant to provide increased durability for extended life.
Incorporates a mid-projection standard center electrode design to ensure consistent performance and reliable ignition in a variety of engine conditions.

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$4.99

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

Product Features:

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

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$13.99

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

Product Features:

0.4mm Iridium Center Electrode: World’s Smallest Diameter that maximizes firing potential
0.7mm Needle Tip Ground Electrode: Promotes higher spark energy and less heat quenching
DENSO Patented Optimized Iridium-Rhodium Alloy Formula: Highest concentration of Iridium vs. competitors for greater durability
DENSO Patented 360 degree laser welding process: Ensuring exceptional quality bond and structural strength with the Iridium Center Electrode
Durability of an OE style plug combined with Power and Torque of high performance.
Withstands temperatures greater than 4000 degree Fahrenheit
Iridium TT
Advanced Twin-Tip Technology: Combines a Fine Wire Iridium Center Electrode with a Needle Tip Platinum Ground Electrode for superior ignition and efficiency.
Enhanced Fuel Economy and Lower Emissions: Designed to provide better fuel economy and reduced emissions, allowing you to drive around the Earth over 4 times.
Original Equipment Specification: Developed from the Super Ignition Plug (SIP) design, ensuring reliable and consistent performance.

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$5.99

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:

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

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$9.99

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

Product Features:

World’s smallest Iridium Center Electrode (0.4mm) for improved spark for maximum combustion
Patented 360-degree laser welding assembly process
U-groove and taper cut ground electrode to maximize flame propagation.
Withstands temperatures greater than 4000 degree Fahrenheit
Burnished nickel plating for high temperature endurance and superior corrosion resistance
Wide range of part numbers for thousands of applications, including classic and collector cars
Iridium Power

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$2.99

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

Product Features:

Copper Plus – Dependable Performance and Durability
Copper core center electrode allows for accurate control of heat range for longer life
Superior corrosion resistance
Built to ISO and SAE standards for proven performance
Built to ISO and SAE standards for proven performance
Enhanced Conductivity and Heat Control: The Champion Copper Plus Spark Plug features a copper core electrode that provides increased conductivity and heat control, ensuring good overall wear and extending the spark plug’s life.
Reliable Nickel Center Electrode Tip: Featuring a nickel center electrode tip and a tapered seat type, this spark plug enhances reliability and ensures optimal engine performance.

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$11.99

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

Product Features:

OE grade platinum on both center and ground electrodes
Premium shell construction with machine-rolled threads
Superior thermal conductivity
Sustained spark performance over 60,000 miles
Reduced secondary required voltage, increased ignition efficiency
Satisfied customers, reduced shop comebacks
Double Platinum

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$6.59

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

Product Features:

Innovative Twin-Tip design promotes faster flame propagation for more complete combustion, enhancing engine performance and efficiency.
Durable platinum center electrode tip ensures exceptional longevity and consistent performance over time.
Tapered seat type provides a secure fit, reducing gas leakage and optimizing combustion chamber sealing.
Precision-engineered to improve ignition efficiency, contributing to smoother engine operation.
Advanced design and robust materials deliver long-lasting performance and reliability for drivers.

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$8.49

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

Product Features:

E3’s Diamond Fire edge to edge ground electrode provides maximum performance with increased efficiency and a faster more complete burn
Smoother Acceleration & Idle – The faster flame initiated by the spark plug results in a more complete burn of the ingested fuel charge. More pressure is created against the piston more fuel is put to work
Energy – Power output improved up to 6% on average in the typical operating ranges. Results will vary.
Efficiency – The “diamond shaped” side wire electrode projects the combustion spark in a way that more quickly ignites the air/fuel mixture, thereby creating a significantly faster and larger flame kernel. The result is that more fuel is put to work durin
E3’s patented Diamond Fire Technology provides a cleaner burning combustion, which translates into fuel savings and reduced engine carbon deposits
The Spark Plugs are pre-gapped at the factory and cannot be adjusted.

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$8.49

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

Product Features:

E3’s Diamond Fire edge to edge ground electrode provides maximum performance with increased efficiency and a faster more complete burn
Smoother Acceleration & Idle – The faster flame initiated by the spark plug results in a more complete burn of the ingested fuel charge. More pressure is created against the piston more fuel is put to work
Energy – Power output improved up to 6% on average in the typical operating ranges. Results will vary.
Efficiency – The “diamond shaped” side wire electrode projects the combustion spark in a way that more quickly ignites the air/fuel mixture, thereby creating a significantly faster and larger flame kernel. The result is that more fuel is put to work durin
E3’s patented Diamond Fire Technology provides a cleaner burning combustion, which translates into fuel savings and reduced engine carbon deposits
The Spark Plugs are pre-gapped at the factory and cannot be adjusted.

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$10.99

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

Product Features:

0.6 mm finewire design improves ignitability
Patented V-trimmed platinum sidewire technology resists wear
OE equivalent design is engineered for every engine
Designed for better overall durability with virtually no gap erosion
Double Iridium-enhanced alloy technology ensures superior wear resistance for extended plug life.

Most Sold 2003 Ford Explorer Ignition Coils and Boots

Explore our best-selling Ford parts for the 2003 Explorer among 20 OEM and aftermarket options starting from $7.49.

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$149.99

These coils feature advanced bobbin technology, highly specialized silicone magnetic steel cores, optimized winding, resistance and turns ratios to deliver 10-15% more energy than OEM coils. Specialized high temperature epoxy resists shock and vibration, while increasing thermal conductivity. These are direct replacements for OEM coils. Must use factory firing order. Bodies and/or secondary towers molded in ACCEL yellow with brass secondary contacts.

Product Features:

10-15% More Energy
Direct Plug In Replacement Direct OE Fit
Advanced Bobbin Technology
Highly Specialized Silicone Magnetic Steel Cores
OBD II Compatible Safe
Standard Motor Products SMP Fd-480

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$93.99

The only parts recommended by Ford Motor Company for Ford, Lincoln and Mercury vehicles. Motorcraft and Ford Parts are used throughout Ford vehicles in a variety of applications that help ensure the proper build quality, integrity and long-lasting performance of every Ford car or truck. Motorcraft and Ford Parts are manufactured from first quality materials chosen specifically for maximum performance and application suitability. As with all Motorcraft and Ford Parts, any innovations or improvements developed since the vehicle’s manufacture are included in these after market replacement parts, ensuring the most current technology and performance.

Product Features:

These coils provide the exact spark timing that helps maximize the engine and emissions performance
RFI suppression helps minimize electronic noise through a Ford patented spring assembly inside the coil boot
Engineered to help withstand temperature extremes
Internal insulation displacement connection is helps make high-reliability internal connections
Interior insulation helps ensure no internal arcing
Right fit for each application; helps provide ease of installation and removal
High grade silicone rubber boot materials do not degrade or stick, aiding in environmental and dielectric sealing
Housings engineered to help resist cracking in the most extreme conditions
Ford-patented iron core lamination stack integrates rare earth magnets in the flux circuit to help deliver consistent high energy required for output

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$60.99

The improved spark energy and voltage of MSD’s blaster 2 coils, combined with reliability, have made them a favorite for performance enthusiasts. Whether firing a restored BOSS 429 or a Saturday night circle tracker, the blaster 2 has always gotten the job done. MSD is excited to offer blaster coils for late model Ford engines with coil-on-plug technology. The new blaster COPs are designed as a direct bolt-in replacement coil for many SOHC Modular Motors. The housing and installation are the same as the factory, but that’s where the similarity ends. Inside the MSD red housing, engineers spec’d better material to assemble the primary and secondary windings. There is also patented dual magnet technology to step up the output. Together, this combines a coil that produces higher voltage and spark energy. The coil-on-plug design of the blaster COPs puts the spark energy right out of the coil and across the plug gap to improve the combustion and output of the engine. The blaster 2 COPs are available individually or as a complete set of eight.

Product Features:

Fits 1999-2004 4.6L And 5.4L SOHC 2V
Improved Spark Energy And Voltage Output
Patented Winding Design and Materials
Direct Bolt-In to Factory Connectors
CARB approved legal for use in all states

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$61.99

Carquest ignition coils meet original equipment (OE) fit, form and function and are built to ensure reliable starting and performance. Carquest ignition coils are tested to ensure proper spark and perfect fit for each application. These ignition coils are an affordable repair choice to restore the vehicle’s ignition system performance. Carquest ignition coils are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.

Product Features:

Built by IATF 16949 certified manufacturers for consistent durability
Coil drivers match OE for current limit, electrostatic discharge (ESD) protection and multi-spark
Segmented secondary bobbins to distribute high voltage and prevent shorting
Extensive design validation testing to ensure long-lasting reliability
100% end-of-line tested to ensure proper performance
Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413

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$74.99

Coils are designed and engineered to be an OE quality replacement for fit and performance
High-strength dielectric epoxy and 100% copper windings used to deliver high-temperature performance and vibration resistance
High-efficiency laminations produce a high-energy spark and reliable performance
Factories use ISO 9001 and IATF 16949 standards to deliver products designed to meet or exceed OE voltage output specifications
Top-quality components and materials used to deliver maximum performance and long service life under tough operating conditions
Long service life

from

$103.99

Built by IATF 16949 certified manufacturers for consistent durability
Coil drivers match OE for current limit, electrostatic discharge (ESD) protection and multi-spark
Segmented secondary bobbins to distribute high voltage and prevent shorting
Extensive design validation testing to ensure long-lasting reliability
100% end-of-line tested to ensure proper performance
Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413

from

$87.99

Built by IATF 16949 certified manufacturers for consistent durability
Coil drivers match OE for current limit, electrostatic discharge (ESD) protection and multi-spark
Segmented secondary bobbins to distribute high voltage and prevent shorting
Extensive design validation testing to ensure long-lasting reliability
100% end-of-line tested to ensure proper performance
Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413

from

$80.99

NGK ignition coils are manufactured to meet or exceed OE standards for the highest durability and operational performance, so they can be installed with confidence. NGK and their family of automotive products have over 80 years’ experience and are driven by extreme dedication to innovation, performance and quality. With state-of-the-art manufacturing, inventory and distribution facilities in North America and globally, NGK is dedicated to providing customers with world-class products and services. Developed and rigorously tested in our ISO 17025 accredited test lab under the most extreme conditions, NGK’s coil designs will outperform all others – far beyond operational environments a vehicle would actually experience. NGK ignition coils have vast coverage including late-model domestic and import vehicles. NGK’s OE legacy, unsurpassed quality and leading vehicles in operation coverage reinforces NGK as The Ignition Specialist.

Product Features:

OE QUALITY: Vacuum-sealed premium epoxy resin and thermoplastic coil housings provide superior dielectric strength, voltage insulation and durability
OPTIMAL PERFORMANCE: Precision coil windings and laminations maximize outputs, custom NGK ASIC chipset optimizes efficiency, prevents component damage
EASE OF INSTALLATION: NGK Ignition Coils include ignition control module, premium high temperature coil boot, and jumper harnesses where required
THE NGK DIFFERENCE: Featuring superior materials and design enhancements
EXTENSIVE TESTING: NGK ignition coils must pass extreme testing during manufacturing to ensure the highest quality and durability standards are met
PRODUCT ENGINEERING: Advanced flow and stress modeling systems preemptively identify and avoid common failure points found in OE and competitor coils

from

$9.49

This replacement boot matches the fit and function of the original part on specified years, make and models. This boot is made from quality materials to resist damage from heat and oil saturation.

Product Features:

Ideal replacement – this spark plug coil boot directly replaces the boot on specified vehicle years, makes and models
Durable construction – this spark plug coil boot is made from a tough rubber material that is resistant to damage from exposure to heat and oil saturation
Quality tested – this part has undergone extensive testing to ensure a quality fit and long service life
Trustworthy design – backed by team of product specialists in the United States

from

$105.99

OE QUALITY: Vacuum-sealed premium epoxy resin and thermoplastic coil housings provide superior dielectric strength, voltage insulation and durability
OPTIMAL PERFORMANCE: Precision coil windings and laminations maximize outputs, custom NGK ASIC chipset optimizes efficiency, prevents component damage
EASE OF INSTALLATION: Includes mounting hardware and necessary components required for certain applications to ensure worry-free installation
THE NGK DIFFERENCE: Featuring superior materials and design enhancements
EXTENSIVE TESTING: NGK ignition coils must pass extreme testing during manufacturing to ensure the highest quality and durability standards are met
PRODUCT ENGINEERING: Advanced flow and stress modeling systems preemptively identify and avoid common failure points found in OE and competitor coils

from

$84.99

As the innovator and leader in stick coil technology DENSO has conducted superior testing and inspection processes to insure the highest quality ignition coil. Don’t be fooled by imitations – look for the DENSO name to be sure you’re getting the best.

Product Features:

First Time Fit
Built to DENSO Original Equipment Standards

from

$109.99

First Time Fit
Built to DENSO Original Equipment Standards

from

$58.99

Blue Ford COP Coil 2

from

$7.49

Product Features:

IMPROVED HIGH TEMPERATURE DESIGN: Solves melting problems for certain very high heat applications
OEM MATCHED: Includes all required internal springs and ferrite resistors for superior performance and RFI noise suppression
LIMITED WARRANTY: See package for details

from

$333.99

Built by IATF 16949 certified manufacturers for consistent durability
Coil drivers match OE for current limit, electrostatic discharge (ESD) protection and multi-spark
Segmented secondary bobbins to distribute high voltage and prevent shorting
Extensive design validation testing to ensure long-lasting reliability
100% end-of-line tested to ensure proper performance
Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413

from

$94.99

Delphi coils provide OE performance, durability and electromagnetic capacity level requirements
Delphi ignition coils are designed to insert power into spark plugs to ensure fast starts, consistent engine performance and optimized fuel efficiency
Delphi uses smart winding process techniques to controls wire lengths, keeping voltage the same
We manufacture our ignition coils with a high quality wire coating that resists imperfections that lead to failure

from

$79.99

Delphi coils provide OE performance, durability and electromagnetic capacity level requirements
Delphi ignition coils are designed to insert power into spark plugs to ensure fast starts, consistent engine performance and optimized fuel efficiency
Delphi uses smart winding process techniques to controls wire lengths, keeping voltage the same
We manufacture our ignition coils with a high quality wire coating that resists imperfections that lead to failure

from

$67.99

Benefits of Bosch original equipment quality ignitions coils include the right ignition voltage, long lasting spark, better engine running conditions, lower fuel consumption, and reduced exhaust emissions.

Product Features:

Meets or exceeds OEM specification
Ensures reliable voltage for smooth engine performance

from

$46.99

while the boots are molded from a high temperature silicone compound for superior heat resistance up to 550 degrees F. Order the direct bolt-on OEM coil pack best suited for your vehicle. Fits 2-valve engines only. Sold Individually.

from

$40.99

Edelbrock Coil No. 22780 is a single coil-on-plug coil designed as a direct performance replacement for the OEM coil on 1998-08 Ford 4.6L-5.4L V8 engines and the 6.8L Triton V10 engine. Each No. 22780 coil features advanced technology with heavy-duty primary and secondary windings inside of a corrosion-resistant housing. The enhanced windings in these coils offer higher energy and voltage output for greater spark and can help to provide quicker starts with improved idle quality. Coil housings are resistant to heat, shock, vibration and corrosion. This coil is available in a set of eight under No. 22781. For the Triton V10 engine, order one No. 22781 coil pack and two No. 22780 single coils for a set of 10.

Product Features:

Maximum 26000 Voltage
Ford V8 4.6L-5.4L 2 Valve

Top-Rated Ignition and Tune-Up Products Brands For Your 2003 Ford Explorer

Shop for the best-rated brands offering Ignition and Tune-Up Products and other products for your 2003 Ford Explorers. Below you’ll find some of our best rated Ignition and Tune-Up Products from Motorcraft, NGK, and Autolite, and more. Ignition and Tune-Up Products from these brands that fit a 2003 Explorer start at just $4.29 and are rated as high as 4.8 stars. OEM and aftermarket Ignition and Tune-Up Products don’t get more top quality, durable, and affordable than from the brands below.

Popular Motorcraft 2003 Ford Explorer Ignition and Tune-Up Products

When it comes to maintaining or upgrading your 2003 Ford Explorer, using quality Ignition and Tune-Up Products is essential to ensure durability and a perfect fit. Motorcraft ticks all of those boxes. We offer a wide selection of Motorcraft Ignition and Tune-Up Products, specifically designed for the 2003 Ford Explorer. With over 3 Motorcraft brand Ignition and Tune-Up Products in stock, you’re sure to find what you need. The prices for these top-notch parts start as low as $4.99, with an average price of just $36.09. Plus, with over 357 customer reviews and an average rating of 4.8 stars, you can trust that our Motorcraft Ignition and Tune-Up Products will get the job done right. Choose Advance Auto Parts for reliability, quality, and expert-approved parts that keep your vehicle running strong.

from $93.99

(118)

Ignition Coil: Meets or Exceeds Original Equipment Specifications, 1 Piece

“Replacement part for my vehicle.”

from $9.29

(238)

Platinum Spark Plug: Enhances Durability & Reduces Fuel Consumption

“Nice”

from $4.99

(1)

Standard Spark Plug: Enhances Durability & Reduces Fuel Consumption

“OEM Quality and Performance”

Popular NGK 2003 Ford Explorer Ignition and Tune-Up Products

NGK auto parts is one of the highest quality Ignition and Tune-Up Product brands in the market. Any 2003 Ford Explorer owner should feel confident when installing genuine NGK parts in their vehicle. To ensure the best fit and performance for your 2003 Explorer, Advance Auto Parts carries a full inventory of 3 NGK Ignition and Tune-Up Products. Plus you will be keeping your Ford in peak condition while saving money because prices on these NGK Ignition and Tune-Up Products range from $7.49 to $14.99, plus, with more than 684 customer reviews and an impressive 4.8 stars average rating, you can be confident the Fram Ignition and Tune-Up Products below will deliver on both quality and value.

from $8.49

(133)

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

“Is was good product”

from $7.49

(448)

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

“Easy swap…A+”

from $14.99

(103)

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

“Works great. perfect fit”

FAQs for 2003 Ford Explorer Ignition and Tune-Up Products

Which Ignition and Tune-Up Products are best-sellers for 2003 Ford Explorers?

Out of 79 Ignition and Tune-Up Products that fit 2003 Ford Explorers, the following parts are the top sellers:

Platinum Spark Plug: Enhances Durability & Reduces Fuel Consumption (18090025) – $9.29
Platinum Spark Plug: Enhanced Durability & Fuel Efficiency (5393906) – $4.99
Iridium XP Fine wire Spark Plug: Improved Durability, More Focused Ignition (15650187) – $10.99

What’s the price range for 2003 Ford Explorer Ignition and Tune-Up Products?

Ignition and Tune-Up Product prices for the 2003 Ford Explorer start at $2.99 and go up to $972.99 for the most premium parts.

What’s the average price of a Ignition and Tune-Up Product for a 2003 Ford Explorer?

The average price for Ignition and Tune-Up Products for the 2003 Ford Explorer is $63.67. Keep in mind the variety of part types within our Ignition and Tune-Up Product category so you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Ignition and Tune-Up Products for other Ford Explorer model years?

Yes, we currently carry Ignition and Tune-Up Products for 33 model years of Ford Explorers between 1991 and 2025. Ignition and Tune-Up Products are bought most frequently for the following model years: 2023, 2022, 2021, 2020, 2019, 2018, 2017, 2016, and 2015.

What are the cheapest Ignition and Tune-Up Products for my 2003 Ford Explorer?

The cheapest 2003 Ford Explorer Ignition and Tune-Up Products we carry in stock are:

Copper Plus Spark Plug (RS12YC): Dependable Performance & Durability (5470017) – $2.99
Copper Resistor Spark Plug: Smooth Acceleration & Enhanced Durability (5391555) – $2.99
U-Groove Spark Plug: OE Performance, T16EPR-U15 (20650487) – $3.49
Copper Resistor Spark Plug: Quick Starts & Reliable Performance (5393507) – $4.29
Copper Resistor Spark Plug: Quick Starts & Enhanced Durability (5390346) – $4.29

What are the top-rated Ignition and Tune-Up Products that fit the 2003 Ford Explorer?

Out of 14,081 reviews by customers, our 2003 Ford Explorer Ignition and Tune-Up Products have an average customer rating of . These are some of the highest-rated Ignition and Tune-Up Product types for the 2003 Ford Explorer and their top-rated products:

Spark Plugs
- Copper Plus Spark Plug (RS9YC): Dependable Performance & Durability (89011734) – $4.79
- Double Platinum Spark Plug (11400026) – $11.49
- Copper Resistor Spark Plug: Smooth Acceleration & Enhanced Durability (5391555) – $2.99
Ignition Coils and Boots
- Copper Plus Spark Plug (RS9YC): Dependable Performance & Durability (89011734) – $4.79
- Double Platinum Spark Plug (11400026) – $11.49
- Copper Resistor Spark Plug: Smooth Acceleration & Enhanced Durability (5391555) – $2.99

What types of Ignition and Tune-Up Products do you sell for my 2003 Ford Explorer?

As of 3/1/26, these are some of the most in-demand types of Ignition and Tune-Up Products for a 2003 Ford Explorer:

Can I get help with 2003 Ford Explorer Ignition and Tune-Up Product orders?

Contact our customer support team, by chat or phone, through the help desk page, where you can find instant answers about Ford Ignition and Tune-Up Products and more.

What is your return policy for Ford Explorer Ignition and Tune-Up Products?

Advance Auto Parts keeps returns simple. For new Ford Explorer Ignition and Tune-Up Products and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.

2003 Ford Explorer Ignition and Tune-Up Products

MSD Ignition – Coils; Street Fire; Ford 4.6/5.4L 3-Valve 04-08 8-Pack (Part No.55138)

Accel – Coil:Ford 4.0L V6 6 Pack-Black (Part No.140061K-6)

NGK – Premium OE Fit & Design Spark Plug Wire Set: Ferrite Mag Core, 8 Leads (Part No.52062)

Carquest Premium – Spark Plug Wire Set: 8 Wires, Increased performance, Designed for direct fit (Part No.35-8183)

Champion – Iridium Spark Plug (RS12WYPB4): Maximum Performance & Longevity (Part No.9204)

Champion – Platinum Power Spark Plug (RS10PYC): Powerful Performance & Durability (Part No.3408)

Carquest Premium – Coil On Plug Insulator Boot: Spring included, Designed for direct fit (Part No.35-7006)

Accel – 8Mm Super Stock Spiral Uni Rd (Part No.5040R)

MSD Ignition – MSD DIS-4 Plus; Distributorless 4 Channel (Part No.62152)

Carquest Premium – New Ignition Modules (Part No.CBE1077)

Dorman – 6-Wire Ford Ignition Module (Gray) (Part No.85130)

MSD Ignition – Harness; Ford 4.6L Modular to DIS-4 Ignition (Part No.88813)

Dorman – Ignition Pulsator Ring (Part No.917-060)

Carquest Premium – Ignition Switch (Part No.CSA1262)

Carquest Premium – Ignition Switch (Part No.CSC1133)

Carquest Premium – Ignition Switch (Part No.CSC1044)

Motorcraft – Spark Plug Wire: Set of 6 Wires (Part No.WR-6120)

Carquest Premium – Spark Plug Boot Set: 8 Boots, Meets or Exceeds OE Specifications (Part No.38-001FMP)

JBA Performance – W06339 Ignition Wires 90-96 Ranger/Explorer 4.0L Blue (Part No.W06339)

Bosch – Knock Sensor (Part No.0261231314)

Carquest Premium – Ignition Knock (Detonation) Sensor (Part No.SBA3803)

Delphi – Knock Sensor (Part No.AS10200)

Carquest Premium – Ignition Coil: Meets or Exceeds OE Specifications, 1 Count (Part No.EBC1519)

Delphi – Ignition Coil (Part No.GN10237)

Carquest Premium – Ignition Coil Set: Meets or Exceeds OE Specifications, 8 Count (Part No.EBC1519-8)

Carquest Premium – Multi-Use Connector (Part No.PTC1725)

Carquest Premium – Multi-Use Connector (Part No.PTA1318)

Carquest Premium – Ignition Switch (Part No.CSC1044)

Motorcraft – Original Equipment (O.E.) Switch Assembly – Ignition (Part No.SW-6958)

Carquest Premium – Multi-Use Connector (Part No.PTC1725)

Carquest Premium – Spark Plug Wire Set: 6 Wires, Increased performance, Designed for direct fit (Part No.35-6300)

Motorcraft – Original Equipment Spark Plug Boot: No core (outer material Rubber) Core, Qty of 1 (Part No.WR-6128)

Carquest Premium – Coil On Plug Insulator Boot: Spring included, Designed for direct fit (Part No.35-7006)

Carquest Premium – Spark Plug Boot Set: 8 Boots, Meets or Exceeds OE Specifications (Part No.38-001FMP)

NGK – Premium OE Fit & Design Spark Plug Wire Set: Ferrite Mag Core, 6 Leads (Part No.52031)

Accel – Pc Cop Boots 97-11 Ford 8-Cyl (Part No.128041)

Motorcraft – Platinum Spark Plug: Enhances Durability & Reduces Fuel Consumption (Part No.SP-493)

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

NGK – Iridium IX Spark Plug (TR55IX): Outstanding Acceleration & Durability (Part No.7164)

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

Motorcraft – Standard Spark Plug: Enhances Durability & Reduces Fuel Consumption (Part No.SP-413)

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

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

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

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

Champion – Copper Plus Spark Plug (RS9YC): Dependable Performance & Durability (Part No.304)

Autolite – Copper Resistor Spark Plug: Smooth Acceleration & Enhanced Durability (Part No.764)

NGK – V-Power Nickel Spark Plug (TR55): Enhanced Ignitability & Performance (Part No.3951)

NGK – G-Power Platinum Spark Plug (TR55GP): Enhanced Durability & Efficiency (Part No.3403)

Autolite – Platinum Spark Plug: Enhanced Durability & Fuel Efficiency (Part No.AP104)

Autolite – Platinum Spark Plug (AP103): Improved Performance & Durability (Part No.AP103)

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

ACDelco – Conventional Spark Plug (Part No.R42LTS)

DENSO – Iridium Power Spark Plug: Maximum Spark Energy, 0.4mm Iridium Tip, IT16 (Part No.5325)

Champion – Copper Plus Spark Plug (RS12YC): Dependable Performance & Durability (Part No.401)

DENSO – Double Platinum Spark Plug: OE Performance, lasts 60K+ Miles, PT16EPR-L13 (Part No.5070)

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

E3 – DiamondFIRE Automotive Spark Plug: More Power & Fuel Efficiency (Part No.E3.62)

E3 – DiamondFIRE Automotive Spark Plug: More Power & Fuel Efficiency (Part No.E3.53)

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

Accel – Coil:Ford 6-Tower Dis Hrzntl (Part No.140035)

Motorcraft – Ignition Coil: Meets or Exceeds Original Equipment Specifications, 1 Piece (Part No.DG-508)

MSD Ignition – Coil; Ford 4.6/5.4L 2-Valve 98-14 Single (Part No.8242)

Carquest – Ignition Coil: Meets OE Specifications, 1 Count (Part No.26C1001)

Carquest Premium – Ignition Coil (Part No.EBC1342)

Carquest Premium – Ignition Coil: Meets or Exceeds OE Specifications, 1 Count (Part No.EBE1833)

Carquest – Ignition Coil: Meets OE Specifications, 1 Count (Part No.26C1051)

NGK – Premium COP Type Ignition Coil: Meets or Exceeds OE Specifications (Part No.48688)

Dorman – Help – Spark Plug Boot with Coil Wire Kit (Part No.49812)

NGK – Premium DIS Type Ignition Coil: Meets or Exceeds OE Specifications (Part No.48806)

DENSO – Direct Ignition Coil – Original Equipment Quality (Part No.673-6000)

DENSO – Direct Ignition Coil – Original Equipment Quality (Part No.673-6100)

MSD Ignition – Blue Ford COP Coil 2 (Part No.82425)

NGK – Direct Ignition Coil on Plug Boot: Hi-Temp. Premium Silicone (Part No.59022)

Carquest Premium – Ignition Coil Set: Meets or Exceeds OE Specifications, 8 Count (Part No.EBC1342-8)

Delphi – Ignition Coil (Part No.GN10178)

Delphi – Ignition Coil (Part No.GN10164)

Bosch – Ignition Coil: Meets or Exceeds Original Equipment Specifications, 1 Piece (Part No.0221504704)

Edelbrock – Max-Fire Coil-On-Plug ignition Ford 4.6L, 5.4L and 6.8L (Part No.22744)