1991 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 1991 Explorer. Advance Auto Parts has popular Explorer parts like Distributors, Ignition Boots, Spark Plugs 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 1991 Ford Explorer Ignition and Tune-Up Products below and start saving instantly.

Popular 1991 Ford Explorer Ignition and Tune-Up Products Categories

Ignition Switch Bulbs

Spark Plugs

Ignition Coils

Spark Plug Boots

Spark Plug Wire Set Cut To Fits

Standard Spark Plug Wires

Ignition Module and Controls

Ignition Starter Switches

Ignition Control Unit Harness

Ignition Control Module Connectors

Distributor O-Rings

Ignition Switch Connectors

Distributor Mount Gaskets

Essential Ignition and Tune-Up Products for 1991 Ford Explorers

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$23.99

Upgrade your vehicle with ZEVO® LED miniature bulbs for added style, performance, and the many benefits of LEDs. Instantly enhance the interior and exterior lighting applications of your vehicle with a modern bright white light for head-turning style and increased visibility by other motorists. Easy-to-install with a robust design and high-quality components, ZEVO replacement bulbs are backed by a limited warranty to provide exceptional performance through the life of the vehicle. Also available in an array of colors to update your car or truck.

Product Features:

HIGH EFFICIENY: Delivers greater clarity with less power consumption and longer bulb life when compared to standard incandescent bulbs
RELIABLE: Thermal management to maximize life, matched with robust design that withstands temperature and shock for optimal performance
NON-POLARITY DESIGN: Plug & play easy installation; SYLVANIA ZEVO LED bulbs light on two sides and can be installed either direction
INSTANT ON: Provide full brightness instantly, giving drivers around you more time to react, compared to the slower light-up with Incandescent bulbs
BRIGHT WHITE LIGHT: Ideal for use in Daytime running lights (DRL), back up/reverse, map, dome, trunk, cargo and license plate light bulb replacement
HYPERFLASH: For some vehicles, installing a load equalizer may be required to eliminate hyper flash or dashboard error messages
EASY DIY INSTALLATION: A direct replacement for the factory bulbs in your vehicle, no modification required
SMART MAINTENANCE: Always replace bulbs in pairs to ensure equal brightness and color.
SAFETY: High-quality SYLVANIA bulbs are designed to perform to all relevant safety standards set for the lighting application.
TRUSTED BRAND: SYLVANIA is a trusted OEM automotive lighting manufacturer, with over 100 years of superior optical engineering experience

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$71.99

These ACCEL wire sets are a true performance upgrade replacement for OE types. Efficient delivery of spark energy for a good price. Silicone boots with black wire contain zinc-plated steel terminals. Noise suppression core. Set contains 8 plug wires with coil lead.

Product Features:

7mm And 8mm High Gloss Silicone Jacket
450° F Rated Silicone Jacket
Stainless Steel Plug Terminals
RFI Suppression For Street Driven Applications
Custom-fit Universal And Import Coverage
High-strength Fiberglass Braid Construction

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$7.99

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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$99.99

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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$71.99

ACCEL’s SuperStock 4000 series spark plug wire sets are designed to upgrade an OE ignition system for high-spark delivery levels for street driven applications. The 450 degree F rated silicone jacket is extruded over a tightly woven, rugged fiberglass braid. The braid is applied over high dielectric strength EPDM (Ethylene Propylene Diene Monomer) inner insulation for ignition wire performance that exceeds SAE specifications.

Product Features:

7mm And 8mm High Gloss Silicone Jacket
450 F Rated Silicone Jacket
Stainless Steel Plug Terminals
RFI Suppression For Street Driven Applications
Custom-fit Universal And Import Coverage
High-strength Fiberglass Braid Construction
Pre And Post HEI Vehicles

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$949.99

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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$244.99

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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$4.29

Fel-Pro® gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.

Product Features:

Meets or exceeds all original equipment specifications
Application specific design to ensure a perfect fit
Engineered for the sealing repair environment
Unsurpassed quality you can trust
Validated for fit, form, and function

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$4.99

With Victor Reinz gaskets, you can be sure you are getting sealing solutions that deliver OE quality gasket technology and engineering. That is because Victor Reinz is an original equipment supplier and the trusted choice of manufacturers the world over, offering broad coverage for foreign and domestic cars and trucks. In Victor Reinz gasket sets, you get the right combination of components needed for fast, long-lasting repairs.

Product Features:

Choosing Victor Reinz assures getting OE quality parts in gaskets sets that have the coverage, contents, packaging and electronic cataloging to best meet the needs of the aftermarket.

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$82.99

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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$22.99

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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$23.05

High-quality products that meet OE appearance and performance to provide professional technicians and DIYers with a cost-effective solution.

Product Features:

Designed to OE standards for ease of installation
Copper alloy conductors ensure superior electrical conductivity with low resistive losses
Our parts are 100% tested to verify both mechanical and electrical switching performance
Robust design and high grade materials meet the stringent demands of today’s service professional
BWD is a global manufacturer of original equipment ignition products, complete quality control is maintained through the manufacturing process from componentry to finished product

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$30.49

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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$20.99

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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$0.99

MAHLE® gaskets provide world class sealing products trusted by OEMs & Technicians around the globe.

Product Features:

All MAHLE gaskets meet or exceed the original equipment specifications providing the finest sealing products available
MAHLE gaskets utilizes OE equivalent or better materials in all our gaskets
MAHLE gaskets is the leader in Domestic, Asian and European applications
The contents of MAHLE gaskets are packaged in shrink wrapped tray, giving you the added security of knowing that you have the right parts, prior to opening the package

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$289.99

Flame-Thrower COP for 3 valve Ford engines feature an optimized coil design which increases the spark energy by 15% over the OEM coils. Molded epoxy prevents premature failure from moisture or winding fatigue. OEM replacement.

Product Features:

30,000 Volts. Direct OEM replacement.
Optimized coil design yields at least 15% more energy available for the spark than the most common OEM coils.
Provides the spark energy throughout the RPM range and with no energy degradation up to 11,000 engine RPMs. Plated Copper terminals for added current conduction.
Moisture resistant construction ensures long life in harsh environments. High-temp boot sustains seal and form. Epoxy molded for shock and vibration resistance.

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$87.99

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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$91.99

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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$8.29

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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$19.99

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

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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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$191.99

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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$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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$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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$2.49

Copper Plus Spark Plug (RS10LC) delivers dependable performance and durability, making it a reliable choice for your vehicle’s ignition system. Featuring a copper core center electrode, it ensures precise heat control and enhanced conductivity, promoting longer life and consistent wear. The patented TinTac and ULTRASEAL coated shell provide superior protection against corrosion, ensuring the spark plug remains resilient in harsh conditions. Additionally, the SAC-9 semiconductor resistor is designed to suppress EMI and RFI interference, contributing to smoother engine operation. Built to ISO and SAE Standards, this spark plug guarantees proven performance and compatibility with a wide range of vehicles. Whether you’re seeking improved ignition efficiency or long-lasting reliability, this spark plug offers exceptional value and quality.

Product Features:

Copper Plus – Dependable Performance.
Copper core center electrode allows for accurate control of heat range for longer life
Patented TinTac and ULTRASEAL coated shell for maximum corrosion resistance
Patented SAC-9 semiconductor resistor for maximum EMI & RFI suppression
Built to ISO and SAE standards for proven performance

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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.

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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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$5.79

The Spark Plug with a reliable ignition design features a standard center electrode crafted from durable nickel, ensuring consistent performance and longevity. Its ground electrode tip is also made of nickel, providing excellent conductivity and resistance to wear. Designed with a tapered seat type, this spark plug ensures a secure fit and optimal sealing, reducing the risk of combustion leaks. Built to deliver dependable ignition, it is an ideal choice for maintaining engine efficiency and smooth operation. Whether you’re replacing a worn-out spark plug or upgrading for better performance, this nickel electrode design offers exceptional value and reliability for your vehicle.

Product Features:

Durable nickel construction on both center and ground electrodes ensures excellent conductivity and resistance to wear, promoting long-lasting performance.
Tapered seat design provides a secure fit and optimal sealing, minimizing the risk of combustion leaks for improved engine efficiency.
Reliable ignition design supports consistent engine performance, contributing to smooth operation and dependable starts.
Engineered for longevity, this spark plug is an ideal choice for maintaining vehicle reliability and reducing the need for frequent replacements.

Upgrade your 1991 Ford Explorer with Top-Quality Ignition and Tune-Up Products

When it comes to maintaining or upgrading your 1991 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 53 Ignition and Tune-Up Products for the 1991 Ford Explorer, designed to meet your needs without breaking the bank. From Distributor replacements to Ignition Boots 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 1991 Ford Explorer at great prices. Our Ignition and Tune-Up Products inventory for this model ranges from just $0.99 to $949.99, with an average price of $48.84. Our 53 Ignition and Tune-Up Products in stock come from 16 trusted brands, so you’re sure to find the right part for your 1991 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 1991 Ford Explorer, we stock popular OEM and aftermarket Ignition and Tune-Up Products from top names like Champion, Autolite, DENSO, and more. Champion Ignition and Tune-Up Products start at just $2.99 and boast an impressive 4.7 stars average rating from customers. Autolite and DENSO also bring quality to the table, with Ignition and Tune-Up Products available starting at $3.49, and at an average 4.6 stars rating. With 1,325 customer reviews and counting, our 1991 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 1991 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 1991 Ford Explorer!

Best-Selling Distributors for 1991 Ford Explorers

Enhance the driving experience in your Ford with 2 quality Distributor components, starting at $0.99.

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$4.99

Choosing Victor Reinz assures getting OE quality parts in gaskets sets that have the coverage, contents, packaging and electronic cataloging to best meet the needs of the aftermarket.

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$0.99

MAHLE® gaskets provide world class sealing products trusted by OEMs & Technicians around the globe.

Product Features:

All MAHLE gaskets meet or exceed the original equipment specifications providing the finest sealing products available
MAHLE gaskets utilizes OE equivalent or better materials in all our gaskets
MAHLE gaskets is the leader in Domestic, Asian and European applications
The contents of MAHLE gaskets are packaged in shrink wrapped tray, giving you the added security of knowing that you have the right parts, prior to opening the package

Top Picks for 1991 Ford Explorer Spark Plugs

Upgrade Ford Explorers with top-quality Spark Plugs parts, including 34 OEM and aftermarket selections for your 1991 model.

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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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$7.29

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. With a platinum center and ground electrode tip, they are resistant to oxidation and arc erosion, ensuring long-lasting performance. The multi-rib insulator protects against misfire, and they are backed by Motorcraft’s Service Parts Warranty. Designed for exact fit in Ford, Lincoln, and Mercury vehicles, they also help prevent false check engine lights. With service intervals of up to 100,000 miles, Motorcraft Spark Plugs are crafted from high-quality materials to deliver reliable performance for almost any application, making them the same components that were in the vehicle when it was 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.
Enhanced Durability: Engineered with a platinum center and ground electrode tip, these spark plugs are resistant to oxidation and arc erosion, ensuring long-lasting performance.

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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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$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 improving fuel efficiency. The platinum firing tip resists gap erosion, extending the service life, while the high alumina ceramic insulator provides superior thermal conductivity and insulation for added strength. A multi-rib insulator prevents flash-over, ensuring reliable operation, and the nickel-plated shell offers corrosion resistance for long-lasting durability. Designed with a tapered seat type, these spark plugs enhance performance and longevity, delivering consistent results. With a mid-projection standard center electrode and nickel ground electrode tip, this performance-grade spark plug is built to meet demanding engine needs. Whether you’re seeking reliability or improved efficiency, Autolite Platinum spark plugs are a smart investment for maintaining peak engine performance.

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.
Tapered Seat Type: Enhances performance and durability for a longer-lasting spark plug.

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$6.99

Double Platinum Spark Plug: Enhanced Durability & Performance is engineered for exceptional reliability and efficiency, featuring a platinum-to-platinum design that minimizes gap erosion and extends the spark plug’s lifespan. Ideal for distributor-less ignition system (DIS) engines, it outperforms copper and standard platinum plugs by reducing misfires and delivering consistent performance. The yttrium-enhanced ground electrode ensures superior heat transfer, making it highly durable under extreme temperatures and pressure. Its high alumina ceramic insulator optimizes thermal conductivity and dielectric strength, while the multi-rib insulator prevents flash-over for added safety. With a mid-projection center electrode and tapered seat type, this performance-grade spark plug is designed to meet the demands of modern engines. Both the center and ground electrode tips are crafted from platinum, ensuring long-lasting functionality and reliability. Perfect for drivers seeking enhanced durability and superior ignition performance, this spark plug is a valuable upgrade for maintaining engine efficiency.

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 compatibility with modern engines, delivering reliable and consistent performance.

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$3.99

Autolite Copper spark plugs are expertly crafted to provide reliable performance and meet the demands of your vehicle. Featuring a copper core center electrode, these spark plugs excel in thermal control and resist fouling, ensuring consistent operation. The high nickel alloy center and ground electrodes are designed for extended life, while the high alumina multi-rib ceramic insulator enhances thermal conductivity and insulation for added strength. A nickel-plated shell offers superior corrosion resistance, boosting durability over time. Engineered for quick starts and smooth acceleration, these spark plugs enhance your driving experience while optimizing fuel efficiency to help you save at the pump. The tapered seat type design further improves performance, ensuring reliable and efficient operation. With a mid-projection standard center electrode and nickel tip materials, these regular-grade spark plugs deliver dependable functionality 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.
Quick Starts and Smooth Acceleration: The Autolite Copper Spark Plug is engineered to deliver quick starts and smooth acceleration, enhancing your driving experience.
Good Fuel Economy: Designed to optimize fuel efficiency, these spark plugs help you get the most out of every gallon.
Enhanced Performance with Tapered Seat Type: The tapered seat type design enhances the performance of the spark plug, ensuring a reliable and efficient operation.

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$10.49

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

Product Features:

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

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$8.49

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

Product Features:

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

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$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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$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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$4.99

The Platinum Spark Plug (AP605) is expertly crafted to deliver enhanced durability and performance for older engine applications. Featuring a platinum center electrode firing tip, it ensures quicker firing, smoother starts, and improved fuel efficiency while preventing gap erosion for a longer service life. Its high alumina ceramic insulator provides superior thermal conductivity and insulation, boosting strength and reliability under demanding conditions. The multi-rib insulator design effectively prevents flash-over, while the nickel-plated shell offers exceptional corrosion resistance, extending the plug’s lifespan. With a mid-projection standard center electrode and a tapered seat type, this performance-grade spark plug is built to optimize engine functionality. The combination of platinum and nickel materials in the electrode tips ensures consistent performance and durability, making it a dependable choice for maintaining acceleration and overall engine efficiency.

Product Features:

Engineered with a platinum firing tip that prevents gap erosion for longer service life.
Its high alumina ceramic insulator provides thermal conductivity and superior insulation for increased strength.
The multi-rib insulator prevents flash-over.
Designed with a nickel-plated shell that is corrosion resistant to provide increased durability for extended life.
Built with a combination of platinum and nickel electrode tips to ensure consistent performance and enhanced durability for maintaining engine efficiency.

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$3.99

Autolite Copper spark plugs are designed to provide quick starts and reliable performance, making them an essential upgrade for your vehicle. Featuring a copper core center electrode, these spark plugs excel in thermal control and resist fouling, ensuring consistent operation. The high nickel alloy center and ground electrodes are engineered for extended life, while the high alumina multi-rib ceramic insulator enhances thermal conductivity and insulation strength. With a nickel-plated shell, these plugs resist corrosion, offering long-lasting durability. The tapered seat design ensures a perfect fit for easy and reliable installation. Built with a mid-projection standard center electrode and nickel tip materials, these regular-grade spark plugs deliver dependable performance. Equipped with a resistor, they are tailored to meet the demands of modern engines, providing the power and efficiency 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.
Perfect Fit: The tapered seat type ensures a perfect fit, making installation easy and reliable for your 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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$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, maintaining durability under high temperatures and pressure. 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 handle demanding conditions. Both the center and ground electrode tips are crafted from platinum, ensuring consistent ignition and enhanced efficiency. Designed to deliver value and reliability, this spark plug is a smart upgrade for those seeking improved engine performance and longevity.

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.
Crafted with a mid-projection center electrode and tapered seat type, this spark plug is designed to handle demanding conditions, ensuring reliable performance and efficiency.

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$6.29

ACDelco Professional Conventional Spark Plugs are designed for reliability and efficient performance, and are a high quality replacement for many vehicles on the road today. Their high-quality copper cores and outstanding suppression characteristics deliver reliable performance. They are also available for Marine applications. These premium aftermarket replacement spark plugs are manufactured to meet your expectations for fit, form, and function.

Product Features:

Black Onyx coating helps reduce corrosion
Copper core provides great heat transfer and helps maximize plug durability
Ribbed suppressor seal extends resistance and helps prevent spark ‘flash over’ and misfires
Nickel-chrome alloy sheathing helps prevent corrosion on center electrode
Available for use in Marine applications
Some ACDelco GM Original Equipment parts may have formerly appeared as GM Genuine Parts (OE) or ACDelco Professional
ACDelco GM Original Equipment parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
GM regularly updates production and service part designs to integrate new materials and technologies

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$2.99

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

Product Features:

Copper Plus – Dependable Performance and Durability
Copper core center electrode allows for accurate control of heat range for longer life
Superior corrosion resistance
Built to ISO and SAE standards for proven performance
Built to ISO and SAE standards for proven performance
Nickel Center Electrode Tip: Equipped with a nickel center electrode tip, this spark plug offers superior durability and reliable performance, making it a dependable choice for maintaining engine efficiency.
Tapered Seat Type: The tapered seat type design of the Champion Copper Plus Spark Plug ensures a secure fit and optimal performance, contributing to the overall reliability of your engine.
OE Replacement: Designed as an OE replacement, the Champion Copper Plus Spark Plug guarantees dependable performance and durability, making it an ideal choice for maintaining your vehicle’s engine.

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$11.99

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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$4.99

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

Product Features:

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

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$6.99

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

Product Features:

Double Platinum Power – Premium Spark Plug. More Powerful Performance.
Platinum center and ground electrode for greater wear resistance
Maintains stable operating temperature under all engine loads
Fine-wire center electrode for greater ignitability
V-trimmed ground electrode promotes sharper spark focus
Heat-Active alloy allows electrodes to reach optimal temperature
OE Replacement: Designed as an original equipment replacement, ensuring compatibility and reliable performance for your vehicle.

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$5.99

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

Product Features:

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

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$4.49

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

Product Features:

The kind of firepower you expect from ACDelco. The spark plug is what started it all for us, and with over 100 years of innovation behind each spark plug, you know they’re going to be great.
Designed for enhanced durability and consistent performance, ensuring reliable ignition over an extended lifespan.
Engineered to meet the needs of a wide range of vehicle makes and models, including General Motors, Ford, Toyota, and Honda.

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$8.49

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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$99.99

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

In-Demand Ignition Wires for 1991 Ford Explorers

Select from 1 premium Ignition Wires parts for your 1991 Ford Explorer.

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from

$110.99

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

Most Sold 1991 Ford Explorer Ignition Coils and Boots

Explore our best-selling Ford parts for the 1991 Explorer among 6 OEM and aftermarket options starting from $87.99.

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$145.99

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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$101.99

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. 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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$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

$98.99

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: 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

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$109.99

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

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$94.99

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 operate as part of an integral engine management system to insert power into spark plugs and ensure fast starts; consistent engine performance and optimized fuel efficiency
Delphi uses winding process techniques to control the length of wire between adjacent windings; that’s important since more length means greater voltage differences and can create more pressure that could break down the insulation and wire coating
We back our ignition coil design with proven materials, such as high quality wires and wire coating that resists the cracks, pin holes and imperfections that most often lead to failure issues

Top-Rated Ignition and Tune-Up Products Brands For Your 1991 Ford Explorer

Shop for the best-rated brands offering Ignition and Tune-Up Products and other products for your 1991 Ford Explorers. Below you’ll find some of our best rated Ignition and Tune-Up Products from Champion, Autolite, and DENSO, and more. Ignition and Tune-Up Products from these brands that fit a 1991 Explorer start at just $2.99 and are rated as high as 4.7 stars. OEM and aftermarket Ignition and Tune-Up Products don’t get more top quality, durable, and affordable than from the brands below.

Popular Champion 1991 Ford Explorer Ignition and Tune-Up Products

When it comes to maintaining or upgrading your 1991 Ford Explorer, using quality Ignition and Tune-Up Products is essential to ensure durability and a perfect fit. Champion ticks all of those boxes. We offer a wide selection of Champion Ignition and Tune-Up Products, specifically designed for the 1991 Ford Explorer. With over 3 Champion 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 $2.99, with an average price of just $5.49. Plus, with over 12 customer reviews and an average rating of 4.7 stars, you can trust that our Champion 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 $4.99

(3)

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

“their American made”

from $2.99

(7)

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

“Great.”

from $8.49

(2)

Iridium Spark Plug (RS14WYPB5): Maximum Performance & Longevity

“These plugs are the best and If you gap them right you will notice improvement in everything. Be sure on all plug that are Iridium do not gap the plug”

Popular Autolite 1991 Ford Explorer Ignition and Tune-Up Products

Autolite auto parts is one of the highest quality Ignition and Tune-Up Product brands in the market. Any 1991 Ford Explorer owner should feel confident when installing genuine Autolite parts in their vehicle. To ensure the best fit and performance for your 1991 Explorer, Advance Auto Parts carries a full inventory of 3 Autolite Ignition and Tune-Up Products. Plus you will be keeping your Ford in peak condition while saving money because prices on these Autolite Ignition and Tune-Up Products range from $3.99 to $6.99, plus, with more than 19 customer reviews and an impressive 4.6 stars average rating, you can be confident the Fram Ignition and Tune-Up Products below will deliver on both quality and value.

from $4.99

(8)

Platinum Spark Plug: Enhanced Durability & Improved Performance

“great price great service”

from $6.99

(1)

Double Platinum Spark Plug: Enhanced Durability & Performance

“Great product”

from $3.99

(10)

Copper Resistor Spark Plug: Quick Starts & Smooth Acceleration

“Good parts”

FAQs for 1991 Ford Explorer Ignition and Tune-Up Products

Which Ignition and Tune-Up Products are best-sellers for 1991 Ford Explorers?

Out of 53 Ignition and Tune-Up Products that fit 1991 Ford Explorers, the following parts are the top sellers:

Iridium TT Spark Plug: Ultimate Endurance and Power, 0.4mm Iridium Tip, IT16TT (10713000) – $13.99
Platinum Spark Plug (AP605): Enhanced Durability & Performance (5393949) – $4.99
Copper Resistor Spark Plug: Quick Starts & Reliable Performance (5392276) – $3.99

What’s the price range for 1991 Ford Explorer Ignition and Tune-Up Products?

Ignition and Tune-Up Product prices for the 1991 Ford Explorer start at $0.99 and go up to $949.99 for the most premium parts.

What’s the average price of a Ignition and Tune-Up Product for a 1991 Ford Explorer?

The average price for Ignition and Tune-Up Products for the 1991 Ford Explorer is $48.84. 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 34 model years of Ford Explorers between 1992 and 2026. 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 1991 Ford Explorer?

The cheapest 1991 Ford Explorer Ignition and Tune-Up Products we carry in stock are:

Distributor Mounting Gasket (11155765) – $0.99
Copper Resistor Spark Plug: Quick Starts & Enhanced Durability (11668323) – $2.49
Copper Plus Spark Plug (RS14YC6): Dependable Performance & Durability (5470001) – $2.99
Spark Plug: 30,000-Mile Interval & RFI Reduction (18090005) – $2.99
U-Groove Spark Plug: OE Performance, T16EPR-U15 (20650487) – $3.49

What are the top-rated Ignition and Tune-Up Products that fit the 1991 Ford Explorer?

Out of 1,325 reviews by customers, our 1991 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 1991 Ford Explorer and their top-rated products:

Ignition Coils and Boots
- Coil:Ford 6-Tower Dis Hrzntl (10567917) – $145.99
Ignition Switches
- Coil:Ford 6-Tower Dis Hrzntl (10567917) – $145.99
Spark Plugs
- Coil:Ford 6-Tower Dis Hrzntl (10567917) – $145.99

What types of Ignition and Tune-Up Products do you sell for my 1991 Ford Explorer?

As of 11/2/25, these are some of the most in-demand types of Ignition and Tune-Up Products for a 1991 Ford Explorer:

Can I get help with 1991 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.

1991 Ford Explorer Ignition and Tune-Up Products

Sylvania – 194 ZEVO: White LED Mini Bulb, Super Bright, 2 Pack (Part No.194LED.BP2)

Accel – Universal Fit Super Stock 8mm Suppression; Spark Plug Wire Set (Part No.4040K)

Carquest Premium – Coil On Plug Insulator Boot: Spring included, Designed for direct fit (Part No.35-7067)

Accel – 8Mm Super Stock Spiral Uni Bk (Part No.5040K)

Accel – 8Mm Super Stock Graphite Uni (Part No.4040B)

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

Carquest Premium – Ignition Module (Part No.CBE1077)

Felpro – Multi-Purpose O-Ring (Part No.5511)

Victor Reinz – Distributor O-Ring (Part No.41-10443-00)

Motorcraft – Spark Plug Wire: Set of 6 Wires (Part No.WR-5791)

Motorcraft – Original Equipment Spark Plug Boot: No core (outer material Rubber) Core, Qty of 1 (Part No.WR-6131)

Carquest – Ignition Switch (Part No.CS120)

Carquest Premium – Ignition Switch (Part No.CSA1262)

Carquest Premium – Multi-Use Connector (Part No.PTA1257)

MAHLE Original – Distributor Mounting Gasket (Part No.72025)

PerTronix – Flame Thrower Coil On Plug: 2004-2008, Ford 3 Valve, 15% More Spark Energy, 8 ea, OE Replacement (Part No.30738)

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

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

Carquest Premium – Multi-Use Connector (Part No.PTA1283)

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

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

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

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

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

Champion – Copper Plus Spark Plug (RS10LC): Dependable Performance & Durability (Part No.403)

Autolite Iridium – Iridium XP Fine wire Spark Plug: Improved Durability, More Focused Ignition (Part No.XP103)

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

Motorcraft – Spark Plug: Reliable Ignition with Nickel Electrode Design (Part No.SP-419-X)

Victor Reinz – Distributor O-Ring (Part No.41-10443-00)

MAHLE Original – Distributor Mounting Gasket (Part No.72025)

Carquest Premium – Spark Plug Wire Set: 6 Wires, Increased performance, Designed for direct fit (Part No.35-6003)

Accel – 8Mm Super Stock Spiral Uni Bu (Part No.5040B)

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

Motorcraft – Double Platinum Spark Plug: Enhances Durability & Reduces Misfires (Part No.SP-486)

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

Autolite – Platinum Spark Plug: Enhanced Durability & Improved Performance (Part No.AP105)

Autolite – Double Platinum Spark Plug: Enhanced Durability & Performance (Part No.APP105)

Autolite – Copper Resistor Spark Plug: Quick Starts & Smooth Acceleration (Part No.765)

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

Champion – Iridium Spark Plug (RS14WYPB5): Maximum Performance & Longevity (Part No.9404)

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)

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

Autolite – Platinum Spark Plug (AP605): Enhanced Durability & Performance (Part No.AP605)

Autolite – Copper Resistor Spark Plug: Quick Starts & Reliable Performance (Part No.605)

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

Autolite – Double Platinum Spark Plug: Enhanced Durability & Performance (Part No.APP605)

ACDelco – Copper Core Spark Plug: Reliable Performance & Durability (Part No.R44LTS)

Champion – Copper Plus Spark Plug (RS14YC6): Dependable Performance & Durability (Part No.13)

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

Champion – Platinum Power Spark Plug (RS14PYC6): Powerful Performance & Durability (Part No.3013)

Champion – Double Platinum Power Spark Plug (RS14PYPB5): Enhanced Ignitability & Durability (Part No.7940)

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

ACDelco – Professional Double Platinum Spark Plug: Enhanced Durability & Performance (Part No.41-963)

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

Accel – 8Mm Super Stock Spiral Uni Bk (Part No.5040K)

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

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

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

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

Delphi – Ignition Coil (Part No.GN10178)