2021 Jeep Wrangler Ignition and Tune-Up Products

Name: Knock Sensor
Brand: Delphi
SKU: AS10167
Price: 22.49 USD

Below you will find various in-demand Jeep Ignition and Tune-Up Products, components and accessories for your 2021 Wrangler. Advance Auto Parts has popular Wrangler parts like Spark Plugs, Ignition Sensors, Ignition Coils and Boots and more. You’ll also find aftermarket and OEM Ignition and Tune-Up Products for other Wrangler model years including 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2022, 2023 and more. Select a category of 2021 Jeep Wrangler Ignition and Tune-Up Products below and start saving instantly.

Popular 2021 Jeep Wrangler Ignition and Tune-Up Products Categories

Essential Ignition and Tune-Up Products for 2021 Jeep Wranglers

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$22.49

Manufactured to meet or exceed OE requirements; Delphi Knock Sensors help maximize engine performance with all fuels; Delphi Knock Sensors prevent against engine damage from pre-ignition knocking.

Product Features:

Flat frequency response allows the same sensor to be used on different engines and the sensor responds to knock frequencies higher than the primary frequency
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
Flat frequency response allows the same sensor to be used on different engines and the sensor responds to knock frequencies higher than the primary frequency
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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$73.99

Carquest premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.

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$24.99

Building upon a foundation of premium full-line products established under NGK ignition and NTK oxygen sensor products, NTK’s expansion to technical sensors is part of our ongoing commitment to streamline product types and increase coverage under one premium brand: NTK, The Sensor Specialist. With over 80 years of automotive expertise, NGK’s family of automotive products are driven by extreme dedication to innovation, performance and quality. NTK is the only OE supplier with a full-line of technical sensors in the aftermarket for import and domestic vehicles. Drawing from OE experience, NTK sensors undergo extreme testing conditions that include thermal shock, vibration and OBD verification. NTK sensors are manufactured to ensure a quality that meets or exceeds OE specifications. As new vehicles incorporate connected and automated technologies, trust The Sensor Specialist for full-line market support and OE application technology.

Product Features:

Reinforced and extra-strength components are used to reduce chance of part failure and prevent corrosion and moisture penetration. Mounting threads match OE for easy, worry free installation.
NTK’s Ignition Knock Sensors are manufactured to operational performance standards to meet or exceed OE fit, form and function to ensure proper ignition timing. This advanced technology is used for durability, drivability and fuel economy.
The Ignition Knock (Detonation) Sensor monitors vibrations caused by engine knock, or detonation, to alter the ignition timing and prevent detonation.

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$23.99

Flat frequency response allows the same sensor to be used on different engines and the sensor responds to knock frequencies higher than the primary frequency
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
Flat frequency response allows the same sensor to be used on different engines and the sensor responds to knock frequencies higher than the primary frequency
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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$21.99

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$36.99

Ignition Knock (Detonation) Sensor

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$18.99

Carquest Knock Sensors respond to a wide range of engine knock frequencies providing accurate engine condition to the ECM for optimal ignition timing. Highest quality piezoceramic element manufactured to tight tolerances for increased durability. All MotoRad Knock Sensors are designed to meet or exceed OEM specifications at our ISO TS16949 manufacturing facilities.

Product Features:

Precision piezoceramic element ensures accurate response to a wide range of engine vibrations
Manufactured using the highest quality OEM materials to ensure optimal performance and rugged durability
Designed to meet or exceed all OEM specifications in fit, form & function
Extensive product testing includes salt spray, high/low temperature impact, thermal cycling, vibration, drop among other tests, to ensure all sensors meet or exceed OEM specifications.

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$9.79

CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.

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$16.22

The DENSO Iridium Long Life spark plug was specifically designed for long service life and consistent performance in the latest, most advanced production cars DENSO’s patented iridium alloy is more durable than even platinum, allowing the center electrode to be shrunk to only 0.7mm in diameter. This produces a dramatic improvement in ignitability and spark plug life. Closely related to platinum and exhibiting even tougher qualities, the rare metal iridium is an ideal material for spark plugs. A fine-wire, 0.7mm iridium center electrode is 360-degree laser welded in place using an exclusive DENSO process, and then matched to a platinum ground electrode. This pair of precision-formed, premium-metal electrodes dramatically extends the plug’s useful life.

Product Features:

Fine-wire iridium center electrode
Platinum ground electrode
360 degree laser-welded spark tip
Sustained spark performance over 100,000 miles
Withstands higher pressures and temperatures

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$37.05

Driveworks® offers a line of aftermarket parts and accessories that are commercially acceptable and competitively priced, which provides professional technicians and DIYers with an affordable alternative for repairs.

Product Features:

Direct-fit OE replacement ensures ease of installation
Designed to meet OE performance
As the leader in commercially acceptable parts, we provide professional technicians with the quality parts they need
As the leader in commercially acceptable parts, we provide professional technicians with the quality parts they need

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$81.99

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 year’s experience and are driven by extreme dedication to innovation, performance and quality. 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

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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$76.99

Universal, 12-volt coil features an oil-filled design and arc resistant alkyd top for superior performance, insulation and cooling. The internal design of this coil eliminates the need for a separate ballast resistor. This coil is specifically designed to deliver optimum performance when used with: Mallory UNILITE or magnetic breaker less ignitions Mallory HYFIRE IV electronic ignition controls, and Mallory electronic ignition conversion kits.

Product Features:

12 Volt Coil
Oil-Filled Design
Arch Resistant Alkyd Top
Designed To Deliver Optimum Performance

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$46.05

Every WSO ignition coil is developed and designed for its specific application, and engineered for maximum performance. WORLD SOURCEONE ignition coils are designed to operate reliably and dependably under all operating conditions and engine rpm ranges, providing the highest engine performance, low exhaust emissions, and fuel economy objectives. WSO Direct Ignition Coils are designed to adapt the required energy output to match engine-operating conditions and deliver the optimum energy level needed to ignite a diluted stratified charge.

Product Features:

OE-Equivalent and a direct fit application
Superior, reliable performance compared to competitive products
Lower cost alternative to original equipment
No additional time consuming steps needed for installation
Factory original equipment connectors
Improved coil efficiency reduces the need to generate excessive high voltage
Designed to provide durability and performance
Noise abatement technology to eliminate audible coil noise
Lower primary inductance provides high-speed performance
Maximum available voltage under all operating conditions
TS 16949 Certification

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$48.49

Carquest Premium engine management products provide the right ignition coils for a wide range of domestic and import applications. They deliver the highest performance and durability under demanding conditions. Designed to meet OE quality and performance standards using top-quality components, our ignition coils are the best choice for your maintenance and repair needs.

Product Features:

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

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$39.49

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:

Long service life and durable performance
High dielectric strength for reliability
Corrosion-resistant connections
Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413
High reliability
Long service life

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$125.99

Computer-Aided Design (CAD), laser scanning and 3D printing – utilizing Fused Deposition Modeling (FDM) and Stereolithography (SLA) – in the part design process ensures speed-to-market and a precise fit guaranteed.
100% pure copper precision-wound windings increase coil life and ensure reliability and maximum coil output when needed.
Highly conductive aluminum alloy secondary terminal guarantees secondary coil terminals will not oxidize (rust), will provide excellent conductivity, extended coil life and will not cause excessive stress on the primary control circuit.
100% thermo-shock and vibration tested to ensure superior performance in extreme conditions.
100% end-of-line tested to ensure confidence and product reliability, every time.

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$44.99

Delphi OE technology ignition products are validated to match the vehicles system; OE quality replacement parts for the right fit , form and function; Delphi coils provide OE performance, durability and electromagnetic capacity level requirements.

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

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$39.99

BWD® is an aftermarket leader, providing a premium line of engine management products. BWD® manufactures and distributes high technology critical components for late model domestic and import vehicles. BWD® is constantly evolving to give customers the competitive edge they need to compete in today’s ever-changing marketplace.

Product Features:

Integrated A/D converter and digital signal processing with a dynamically adaptive switch point improves accuracy and operation
Advanced circuitry protects the system from stray electro-magnetic fields and power spikes
Custom magnetic circuit programming calibrates the sensor while performance testing for improved timing accuracy between the target wheel and sensor output
Neodymium magnet produces max high voltage output at all speeds
Stainless steel spring resists corrosion
Tin-plated brass terminals improve electrical contact and protect against corrosion
High-dielectric epoxy injected into case and pulled into vacuum to eliminate air pockets and prevent moisture intrusion or thermal breakdown
Silicone rubber boot withstands extreme heat to ensure superior insulation

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$20.00

NGK’s Laser Iridium Spark Plugs Provide Superior Ignitability and Long Service Life. Fine Wire Iridium Tipped Center Electrode and Fine Wire Platinum Tipped Ground Electrode Ensures Slow Wear Rate Providing Stable Idle, Superior Anti Fouling, Improved Fuel Efficiency and Lower Emissions.

Product Features:

Trivalent Metal Plating Provides Superior Anti-Corrosion and Anti-Seizing Properties
Corrugated Ribs Prevent Flashover
Pure Alumina Silicate Ceramic Insulator, Provides Superior Strength and Better Heat Transfer
Copper Core Aids in Heat Removal
Triple Seals Prevent Leakage

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$4.79

Autolite has over 100 years of engineering experience and has sold over 11 billion plugs. Designed and engineered in the USA, Autolite Platinum spark plugs provide a center wire platinum firing tip which provides reduced gap erosion, fewer misfires, better performance and increased durability. Consider upgrading to Autolite Double Platinum or Iridium XP spark plugs for increased performance.

Product Features:

High nickel alloy side electrode maintains precise gap
Full platinum tip assures virtually no gap erosion for long life
Necked-down center electrode fires quicker, cleaner with less voltage for easier starts, quicker acceleration and improved fuel economy (as compared to standard plugs)

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$9.49

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

Product Features:

Double Platinum Power – Premium Spark Plug. More Powerful Performance.
Platinum center and ground electrode for greater wear resistance
Maintains stable operating temperature under all engine loads
Fine-wire center electrode for greater ignitability
V-trimmed ground electrode promotes sharper spark focus
Heat-Active™ alloy allows electrodes to reach optimal temperature

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$4.99

NGK V-Power spark plugs offer reliable performance and improved ignitability over standard nickel plugs. Engineered specifically for OE applications, the special V-cut nickel alloy center electrode and concave ground electrode of NGK’s V-Power spark plug

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

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$13.29

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

Product Features:

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

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$13.99

Crown Automotive continues to be the leader in quality replacement parts for Jeep(R) vehicles. Crown has the largest stock of replacement parts for Jeep(R) vehicles, including factory discontinued parts. In fact, many of the older Jeeps are still on (and off) the road thanks to Crown parts. The Crown line consists of axle, body, brake, clutch, cooling, driveline, electrical, engine, exhaust, fuel, steering, suspension, transmission And transfer case components. Crown Automotive also offers an exclusive line of component kits And accessory products.

Product Features:

Manufactured From High Quality Material
Engineered To The Specifications
Meets The Quality Standards
Designed For Performance And Durability
Easy To Install

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$17.49

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

Product Features:

Latest OE technology with DENSO’s patented Iridium Alloy (90% Ir) and fine wire center electrode
Platinum ground electrode for extended life
DENSO Patented 360 degree laser welding process: Ensuring exceptional quality bond and structural strength with the Iridium Center Electrode
Sustained spark performance over 100,000 miles
Lasts up to three times as long as conventional plugs
Endures extreme temperatures greater than 4,000 degrees F associated with high-performance ignition and special fuel systems
Iridium Long Life

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$6.29

NGK G-Power Platinum spark plugs are the best single platinum spark plugs at an economical price. G-Power plugs feature a fine wire platinum center electrode and a trapezoidal cut ground electrode that offers increased durability, improved fuel efficiency

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

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$10.99

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

Product Features:

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

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$6.99

The Spark Plugs are the product of years of fundamental research in the combustion field. The unique patented electrode configuration of these new The spark plugs increases the amount of combustion pressure created during each power stroke of an engine, which results in a marked increase in power output, fuel economy, and reduced emissions in all gasoline engines. E3.66 is a 14mm, 1.000 reach plug with a taper seat. It fits a wide variety of late model applications, especially Hemi applications. E3.66 is widely stocked in automotive retail stores. The automotive plugs have three legs securing the Diamond FIRE electrode to the shell. This allows for excellent heat transfer, and helps to create more turbulence in the cylinder. The patented Diamond FIRE side wire is proven to increase power, reduce fuel consumption and improve hydrocarbon emissions in long-term use.

Product Features:

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

Upgrade your 2021 Jeep Wrangler with Top-Quality Ignition and Tune-Up Products

When it comes to maintaining or upgrading your 2021 Jeep Wrangler, nothing is more important than using high-quality OEM or aftermarket parts that you can trust. Whether you’re repairing damage to your Jeep or enhancing its overall performance, Ignition and Tune-Up Products are key to keeping your Wrangler functioning at its best. At Advance Auto Parts, we offer a wide selection of 13 Ignition and Tune-Up Products for the 2021 Jeep Wrangler, designed to meet your needs without breaking the bank. From Spark Plug replacements to Ignition Sensors 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 2021 Jeep Wrangler at great prices. Our Ignition and Tune-Up Products inventory for this model ranges from just $5.29 to $139.99, with an average price of $23.50. Our 13 Ignition and Tune-Up Products in stock come from 7 trusted brands, so you’re sure to find the right part for your 2021 Jeep Wrangler 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 2021 Jeep Wrangler, we stock popular OEM and aftermarket Ignition and Tune-Up Products from top names like Autolite, DENSO, NGK, and more. Autolite Ignition and Tune-Up Products start at just $5.29 and boast an impressive 5 stars average rating from customers. DENSO and NGK also bring quality to the table, with Ignition and Tune-Up Products available starting at $16.22, and at an average 5 stars rating. With 3,312 customer reviews and counting, our 2021 Jeep Wrangler 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 2021 Jeep Wrangler is always ready to roll. We’re committed to providing you with everything you need to keep your Wrangler in top shape, all in one place. Start shopping confidently below for your 2021 Jeep Wrangler!

Best-Selling Spark Plugs for 2021 Jeep Wranglers

Enhance the driving experience in your Jeep with 9 quality Spark Plug components, starting at $5.29.

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$17.49

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

Product Features:

Latest OE technology with DENSO’s patented Iridium Alloy (90% Ir) and fine wire center electrode
Platinum ground electrode for extended life
DENSO Patented 360 degree laser welding process: Ensuring exceptional quality bond and structural strength with the Iridium Center Electrode
Sustained spark performance over 100,000 miles
Lasts up to three times as long as conventional plugs
Endures extreme temperatures greater than 4,000 degrees F associated with high-performance ignition and special fuel systems
Iridium Long Life

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$19.99

NGK Laser Iridium spark plugs offer the best combination of performance and longevity. Engineered specifically for OE applications, Laser Iridium spark plugs are tested to the highest standards to ensure quality and durability. Iridium tipped center electrode provides durability six times harder than platinum. NGKs high grade pure alumina ceramic and 98 percent pure copper core prevents the spark plug from overheating while providing reliable starts. Most Laser Iridium spark plugs feature a platinum pad on the ground electrode for even wear in distributorless ignition systems.

Product Features:

ACTUAL OE or EQUIVALENT DESIGN: OEM quality construction fine wire iridium alloy center electrode provides consistent performance
IRIDIUM ALLOY CENTER ELECTRODE: Iridium’s density (6x that of platinum) and extremely high melting point is perfect for modern high efficiency engines
PLATINUM TIP GROUND ELECTRODE: Unless OE specified, platinum protection at the ground electrode provides excellent ignitability and service life
SOLID COPPER CORE: 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges
TRIVALENT METAL PLATING: Delivers superior anti-corrosion and anti-seizing properties, ensuring ease of installation and removal
RECOMMENDED USAGE: Best for vehicles with OE fine wire iridium alloy plugs
Superior Durability: The iridium-tipped center electrode is six times harder than platinum, ensuring long-lasting performance and reliability.
OE Application Specific: Engineered specifically for Original Equipment (OE) applications, ensuring a perfect fit and optimal performance.
Even Wear: Features a platinum pad on the ground electrode, designed for even wear in distributorless ignition systems.
Fine Wire Tip Design: The fine wire tip design of the ILZKR7B11 model enhances ignition efficiency and performance.

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$9.99

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

Product Features:

0.6 mm finewire design improves ignitability
Patented V-trimmed platinum sidewire technology resists wear
OE equivalent design is engineered for every engine
Designed for better overall durability with virtually no gap erosion

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$5.29

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

Product Features:

Works to optimize engine performance for a longer life and improved fuel economy
OE design
Full-platinum tips; platinum on both the center and side electrodes to promote reduced gap wear
Platinum ball welding process provides a consistent point of contact for enhanced adhesion

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$10.99

Autolite Iridium Ultra is an engineered OE replacement iridium spark plug.
A laser-welded 0.5mm pure iridium finewire center electrode provides optimal fuel efficiency, acceleration and focused ignitability.
Nickel-plated shell to resist corrosion.
High-alumina ceramic insulator for increased strength.
Laser welded 0.5mm Iridium finewire center electrode.
Proprietary platinum sidewire technology.

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$31.95

SPARK PLUG

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$17.49

ACTUAL OE or EQUIVALENT DESIGN: OEM quality construction fine wire iridium alloy center electrode provides consistent performance
IRIDIUM ALLOY CENTER ELECTRODE: Iridium’s density (6x that of platinum) and extremely high melting point is perfect for modern high efficiency engines
PLATINUM TIP GROUND ELECTRODE: Unless OE specified, platinum protection at the ground electrode provides excellent ignitability and service life
SOLID COPPER CORE: 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges
TRIVALENT METAL PLATING: Delivers superior anti-corrosion and anti-seizing properties, ensuring ease of installation and removal
RECOMMENDED USAGE: Best for vehicles with OE fine wire iridium alloy plugs

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$10.49

Champion® Iridium – the ultimate element. This spark plug’s fine-wire iridium center and platinum ground electrodes provide the sharpest spark focus for maximum performance.

Product Features:

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

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$7.49

The Spark Plugs are the product of years of fundamental research in the combustion field. The unique patented electrode configuration of these new The spark plugs increases the amount of combustion pressure created during each power stroke of an engine, which results in a marked increase in power output, fuel economy, and reduced emissions in all gasoline engines. E3.82 is a 12mm, 1.000 reach plug with a gasket seat. It fits a wide variety of late model applications, especially import. E3.82 has two legs securing the Diamond FIRE electrode to the shell. This allows for excellent heat transfer, and helps to create more turbulence in the cylinder. The patented Diamond FIRE side wire is proven to increase power, reduce fuel consumption and improve hydrocarbon emissions in long-term use.

Product Features:

E3’s Diamond Fire edge to edge ground electrode provides maximum performance with increased efficiency and a faster more complete burn
Smoother Acceleration & Idle – The faster flame initiated by the The spark plug results in a more complete burn of the ingested fuel charge. More pressure is created against the piston more fuel is put to work
Energy – Power output improved up to 6% on average in the typical operating ranges. Results will vary.
Efficiency – The “diamond shaped” side wire electrode projects the combustion spark in a way that more quickly ignites the air/fuel mixture, thereby creating a significantly faster and larger flame kernel. The result is that more fuel is put to work durin
E3’s patented Diamond Fire Technology provides a cleaner burning combustion, which translates into fuel savings and reduced engine carbon deposits
The Spark Plugs are pre-gapped at the factory and cannot be adjusted.
Patented Electrode Configuration: The unique patented electrode design of the E3.82 spark plugs increases combustion pressure, resulting in enhanced power output and improved fuel economy.
Superior Heat Transfer: The two legs securing the Diamond FIRE electrode to the shell ensure excellent heat transfer, promoting better engine performance and longevity.
Wide Compatibility: The E3.82 spark plug, with its 12mm, 1.000 reach and gasket seat, fits a wide variety of late model applications, especially import vehicles.
Enhanced Engine Efficiency: By creating more turbulence in the cylinder, the E3.82 spark plugs improve combustion efficiency, leading to better overall engine performance.

Most Popular 2021 Jeep Wrangler Ignition Sensors

Customize your Jeep with 1 Ignition Sensors products like Knock Sensors, all priced under $36.99.

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$36.99

Ignition Knock (Detonation) Sensor

Top Picks for 2021 Jeep Wrangler Ignition Coils and Boots

Upgrade Jeep Wranglers with top-quality Ignition Coils and Boots parts, including 2 OEM and aftermarket selections for your 2021 model.

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$39.99

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:

Computer-Aided Design (CAD), laser scanning and 3D printing – utilizing Fused Deposition Modeling (FDM) and Stereolithography (SLA) – in the part design process ensures speed-to-market and a precise fit guaranteed.
100% pure copper precision-wound windings increase coil life and ensure reliability and maximum coil output when needed.
Highly conductive aluminum alloy secondary terminal guarantees secondary coil terminals will not oxidize (rust), will provide excellent conductivity, extended coil life and will not cause excessive stress on the primary control circuit.
100% thermo-shock and vibration tested to ensure superior performance in extreme conditions.
100% end-of-line tested to ensure confidence and product reliability, every time.

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$139.99

Ignition Coil

In-Demand Ignition Coils for 2021 Jeep Wranglers

Select from 1 premium Ignition Coils parts for your 2021 Jeep Wrangler.

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$16.22

Fine-wire iridium center electrode
Platinum ground electrode
360 degree laser-welded spark tip
Sustained spark performance over 100,000 miles
Withstands higher pressures and temperatures

Top-Rated Ignition and Tune-Up Products Brands For Your 2021 Jeep Wrangler

Shop for the best-rated brands offering Ignition and Tune-Up Products and other products for your 2021 Jeep Wranglers. Below you’ll find some of our best rated Ignition and Tune-Up Products from Autolite, DENSO, and NGK, and more. Ignition and Tune-Up Products from these brands that fit a 2021 Wrangler start at just $5.29 and are rated as high as 5 stars. OEM and aftermarket Ignition and Tune-Up Products don’t get more top quality, durable, and affordable than from the brands below.

Popular Autolite 2021 Jeep Wrangler Ignition and Tune-Up Products

When it comes to maintaining or upgrading your 2021 Jeep Wrangler, using quality Ignition and Tune-Up Products is essential to ensure durability and a perfect fit. Autolite ticks all of those boxes. We offer a wide selection of Autolite Ignition and Tune-Up Products, specifically designed for the 2021 Jeep Wrangler. With over 3 Autolite 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 $5.29, with an average price of just $8.76. Plus, with over 48 customer reviews and an average rating of 5 stars, you can trust that our Autolite 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.

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$5.29

This product is not rated

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

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$10.99

This product is not rated

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

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$9.99

(48)

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

“Wife’s Grand Cherokee 3.6 had a misfire code. Replaced plugs. Problem solved.”

Popular DENSO 2021 Jeep Wrangler Ignition and Tune-Up Products

DENSO auto parts is one of the highest quality Ignition and Tune-Up Product brands in the market. Any 2021 Jeep Wrangler owner should feel confident when installing genuine DENSO parts in their vehicle. To ensure the best fit and performance for your 2021 Wrangler, Advance Auto Parts carries a full inventory of 2 DENSO Ignition and Tune-Up Products. Plus you will be keeping your Jeep in peak condition while saving money because prices on these DENSO Ignition and Tune-Up Products range from $16.22 to $17.49, plus, with more than 117 customer reviews and an impressive 5 stars average rating, you can be confident the Fram Ignition and Tune-Up Products below will deliver on both quality and value.

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$16.22

This product is not rated

Iridium Long Life Spark Plug

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$17.49

(117)

Iridium Long-Life Spark Plug: OE Performance, last 100K+ Miles, SXU22HCR11S

“Fort great have used them on many vehicles.”

FAQs for 2021 Jeep Wrangler Ignition and Tune-Up Products

Which Ignition and Tune-Up Products are best-sellers for 2021 Jeep Wranglers?

Out of 13 Ignition and Tune-Up Products that fit 2021 Jeep Wranglers, the following parts are the top sellers:

Iridium XP Finewire Spark Plug: Improved Durability, More Focused Ignition (11015587) – $9.99
Double Platinum Spark Plug: Platinum Firing, Superior Durability, Longer Life (11668326) – $5.29
Iridium Ultra Finewire Spark Plug: Optimal Performance, Durability, Ignitability (12008333) – $10.99

What’s the price range for 2021 Jeep Wrangler Ignition and Tune-Up Products?

Ignition and Tune-Up Product prices for the 2021 Jeep Wrangler start at $5.29 and go up to $139.99 for the most premium parts.

What’s the average price of a Ignition and Tune-Up Product for a 2021 Jeep Wrangler?

The average price for Ignition and Tune-Up Products for the 2021 Jeep Wrangler is $23.50. 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 Jeep Wrangler model years?

Yes, we currently carry Ignition and Tune-Up Products for 36 model years of Jeep Wranglers between 1987 and 2024. Ignition and Tune-Up Products are bought most frequently for the following model years: 2023, 2022, 2020, 2019, 2018, 2017, 2016, 2015, and 2014.

What are the cheapest Ignition and Tune-Up Products for my 2021 Jeep Wrangler?

The cheapest 2021 Jeep Wrangler Ignition and Tune-Up Products we carry in stock are:

Double Platinum Spark Plug: Platinum Firing, Superior Durability, Longer Life (11668326) – $5.29
DiamondFIRE Automotive Spark Plug: More Power, Saves Gas (12220727) – $7.49
Iridium XP Finewire Spark Plug: Improved Durability, More Focused Ignition (11015587) – $9.99
Champion Iridium Spark Plug RER8ZWYPB4 (50012496) – $10.49
Iridium Ultra Finewire Spark Plug: Optimal Performance, Durability, Ignitability (12008333) – $10.99

What are the top-rated Ignition and Tune-Up Products that fit the 2021 Jeep Wrangler?

Out of 3,312 reviews by customers, our 2021 Jeep Wrangler 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 2021 Jeep Wrangler and their top-rated products:

Spark Plugs
- OE Series Laser Iridium Spark Plug: Fine Wire Tip Design, ILZKR7B11 (11314712) – $19.99
- Iridium Long-Life Spark Plug: OE Performance, last 100K+ Miles, SXU22HCR11S (10477947) – $17.49
- Iridium XP Finewire Spark Plug: Improved Durability, More Focused Ignition (11015587) – $9.99

What types of Ignition and Tune-Up Products do you sell for my 2021 Jeep Wrangler?

As of 2/5/25, these are some of the most in-demand types of Ignition and Tune-Up Products for a 2021 Jeep Wrangler:

Can I get help with 2021 Jeep Wrangler 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 Jeep Ignition and Tune-Up Products and more.

What is your return policy for Jeep Wrangler Ignition and Tune-Up Products?

Advance Auto Parts keeps returns simple. For new Jeep Wrangler 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.

2021 Jeep Wrangler Ignition and Tune-Up Products

Delphi – Knock Sensor (Part No.AS10167)

Carquest Premium – Ignition Knock (Detonation) Sensor (Part No.SBA3813)

NTK – Ignition Knock (Detonation) Sensor (Part No.ID0232)

Delphi – Knock Sensor (Part No.AS10266)

Carquest Premium – Ignition Knock (Detonation) Sensor (Part No.SBA3669)

Carquest Premium – Ignition Knock (Detonation) Sensor (Part No.SBA5404)

Carquest Premium – Knock Sensor (Part No.EKC1012)

Carquest Premium – Ignition Capacitor (Part No.GAA1128)

DENSO – Iridium Long Life Spark Plug (Part No.F1000316471ND)

Driveworks – Electronic Ignition Coil (Part No.26333)

NGK – Ignition Coil: Meets or Exceeds Original Equipment Specifications, 1 Piece (Part No.48695)

Mallory – Universal Street Performance Ignition Coil (Part No.29219)

World Source One – Direct Ignition Cassette (Part No.F3005403887WSO)

Carquest Premium – Ignition Coil (Part No.EBC1853)

Carquest – Ignition Coil: Meets OE Specifications, 1 Count (Part No.26C1046)

Carquest – Ignition Coil: Meets or Exceeds Original Equipment Specifications, 1 Piece (Part No.26C1055)

Delphi – Ignition Coil (Part No.GN10174)

Carquest – Ignition Coil (Part No.E1148)

NGK – Laser Iridium Spark Plug (Part No.F100066430NGK)

Autolite – Platinum Spark Plug: Fires Cleaner, Easier Starts, Quicker Acceleration (Part No.AP985)

Champion – Double Platinum & Power Spark Plug Exceptional Perf OE Replacement RC12PEPB5 (Part No.7034)

NGK – OE Series V-Power Nickel Spark Plug: V-Groove Tip Design, ZFR5N (Part No.3459)

DENSO – Iridium Power Spark Plug: Maximum Spark Energy, 0.4mm Iridium Tip, IXUH22I (Part No.5356)

Crown Auto Jeep Replacmnt – Spark Plug Double Platinum (Part No.S2RE14PLP5)

DENSO – Iridium Long-Life Spark Plug: OE Performance, last 100K+ Miles, SXU22HCR11S (Part No.3461)

NGK – G-Power Spark Plug: Single Platinum Tip Design, LZTR5AGP (Part No.3381)

Autolite Iridium – Iridium Ultra Finewire Spark Plug: Optimal Performance, Durability, Ignitability (Part No.AI5263)

E3 – DiamondFIRE Automotive Spark Plug: More Power, Saves Gas (Part No.E3.66)

DENSO – Iridium Long-Life Spark Plug: OE Performance, last 100K+ Miles, SXU22HCR11S (Part No.3461)

NGK – OE Series Laser Iridium Spark Plug: Fine Wire Tip Design, ILZKR7B11 (Part No.7751)

Autolite Iridium – Iridium XP Finewire Spark Plug: Improved Durability, More Focused Ignition (Part No.XP5701)

Autolite – Double Platinum Spark Plug: Platinum Firing, Superior Durability, Longer Life (Part No.APP5701)

Autolite Iridium – Iridium Ultra Finewire Spark Plug: Optimal Performance, Durability, Ignitability (Part No.AI5701)

Worldpac – SPARK PLUG (Part No.F100056141CSP)

NGK – OE Series Laser Iridium Spark Plug: Fine Wire Tip Design, ILZKR7G7G (Part No.90219)

Champion – Champion Iridium Spark Plug RER8ZWYPB4 (Part No.9417)

E3 – DiamondFIRE Automotive Spark Plug: More Power, Saves Gas (Part No.E3.82)

Carquest Premium – Ignition Knock (Detonation) Sensor (Part No.SBA5404)

Carquest Premium – Ignition Coil: Meets or Exceeds Original Equipment Specifications, 1 Piece (Part No.EBC1319)

Carquest Premium – Ignition Coil (Part No.EBC2019)

DENSO – Iridium Long Life Spark Plug (Part No.F1000316471ND)