Spark Plugs

The spark plug is an important part of the engine. An internal combustion engine requires three key ingredients to operate: air, fuel and spark. A spark plug is a critical engine component that provides the spark that ignites the air-fuel mixture that drives an engine. A spark plug operates by directing electrical current to flow through a centre electrode, forming a spark across an electrode (or air) gap, completing the circuit to a ground electrode. The centre electrode is surrounded by a ceramic insulator which is non-conductive preventing current leakage and ensuring electricity flows in the desired direction.

Search Spark Plugs Categories

Videos

Loading...
Partsavatar ca Car Parts Wire Colors NTK Oxygen Sensors NGK Spark Plugs Tech Video
Loading...
Partsavatar ca Car Parts Spark Plug ACDelco Professional Conventional Spark Plugs
Loading...
Partsavatar ca Car Parts Rapidfire Performance Spark Plugs ACDelco
Loading...
Partsavatar ca Car Parts Professional Platinum Spark Plugs ACDelco
Loading...
Partsavatar ca Car Parts Professional Iridium Spark Plugs ACDelco
Loading...
Partsavatar Aftermarket Car-Parts DENSO Iridium TT Spark Plugs
Loading...
Partsavatar Car Parts - Champion Iridium EZ Start Spark Plug

Spark Plugs by Acdelco Professional

Acdelco Professional Iridium Spark Plugs

Loading...
ACDelco Professional Iridium Spark Plugs are the ideal high-quality replacement for many vehicles on the road today. They are the latest in spark plug technology and an exact replacement for your vehicle's original components. Iridium composition has the highest melting point and strength of all metals. It provides the greatest wear resistance and durability over Platinum and Conventional spark plugs. ACDelco Professional Iridium Spark Plugs provide the best wear resistance and durability of any spark plug. These premium aftermarket replacement iridium spark plugs are manufactured to meet and exceed your expectations for fit, form and function.
* Locate Repair Shops Near You
* Locate Parts Stores Near You
* Buy Parts Online
Features & Benefits
* Iridium offers better engine idle stability and smoother performance
* Iridium allows for smaller, more efficient electrode designs for improved cold starting and quicker acceleration
* Iridium fine-wire electrode helps improve ignition of the fuel and burns away carbon deposits on the tip of the plug as they form, to help improve fuel economy
* One-piece suppressor seal blocks radio frequencies that can affect vehicle electronics
* Suppressor seal meters spark energy for longer electrode life and seals against combustion leakage

Product Facts
Find out more about the ACDelco Professional Iridium Spark Plug and how it fits into the Starting and Charging System with the product facts below.
Function:
Uses a high-voltage spark from the ignition coil to ignite the air/fuel mixture inside the engine's cylinders.
Signs Of Wear & Troubleshooting:
* Engine has trouble starting, hesitates, or cuts out.
* Sluggish engine performance, loss of engine power, or decreased fuel economy.
* Lack of acceleration or loss of speed when driving uphill.
* Cracks in the upper or lower portion of the spark plug insulator.
* Chipped or broken insulator tip.
* Damaged spark plug boot.

What It Does:
The Starting and Charging System starts the engine, maintains the battery's charge and provides power to the electrical accessories while the engine is running.
Good Maintenance Practices:
It is important to inspect spark plugs at regular intervals for signs of deterioration. Follow these steps for removing spark plugs for inspection, servicing or replacement:
* Grasp the spark plug boot and gently rotate it 90 degrees counterclockwise. Pull the spark plug boot and cable away from the spark plug. If necessary, use spark plug boot removing tool. DO NOT grab or violently pull spark plug cables.
* Use the correct deep socket size to loosen each spark plug one or two turns. NOTE: To remove spark plugs from aluminum heads, allow the engine to cool. The heat of the engine, in combination with a spark plug that is still hot, may cause the spark plug threads to strip the cylinder head upon removal.
* Brush or air-blast dirt away from the well areas before removing spark plugs. CAUTION: Use goggles to protect eyes from dirt when applying compressed air to spark plug wells.
* Remove each spark plug and place each one in a tray by cylinder number. This will help identify and relate any unusual condition to the cylinder involved.
* Apply dielectric grease into the boot area to reduce the chance of exterior tracking on the buttress tower of the spark plug. This grease also promotes a good heat transfer between the spark terminal screw and boot terminal.
* Before installing new spark plugs, use a gap guide to make sure your new spark plugs have the correct gap. NOTE: ACDelco Professional Iridium Spark Plugs are pre-gapped during manufacturing. Never attempt to gap an ACDelco Professional Iridium Spark Plug. You could damage the spark plug. Replace the incorrectly gapped ACDelco Professional Iridium Spark Plug with one that is correctly gapped.

FAQs:
Should I change my spark plugs every 3,000 miles?
• No, it depends on what type of spark plug your vehicle requires. Refer to your Owner's Manual or contact your vehicle's manufacturer for more information.
Can changing my spark plugs improve my engine's performance?
• Yes, but spark plugs may not be the only factor impacting performance. Replacing old spark plugs may temporarily improve poor engine performance due to reduced demand on the ignition system. However, this is not the cure for poor engine performance caused by worn rings, faulty carburetion, worn distributor parts or other engine performance issues.
Should I change all of my vehicle's spark plugs at the same time?
• Yes, if it is the scheduled time for spark plug replacement. It may be OK to replace one spark plug if it was broken for any reason prior to scheduled maintenance.
Does a diesel engine require a different type of plug than a gas engine?
• Yes. Diesel engines require glow plugs because diesel engine ignitions operate differently than gas engines. ACDelco Professional Glow Plugs are specially designed to give diesel engines the heat they need for their cold starts.
Are ACDelco spark plugs pre-gapped?
• Yes. When ACDelco spark plugs are manufactured, they are pre-gapped to the correct gap specification.
When I replace my spark plugs, should I also replace my spark plug wires?
• Not always. Refer to your vehicle Owner's Manual or contact the manufacturer for more information.
How do spark plugs become fouled?
• Certain engine conditions can cause oil, powder and carbon to collect on the spark plug, causing a misfire. See our list of Signs and Causes of Spark Plug Wear.
What is pre-ignition and can it damage my engine?
• Yes, pre-ignition can cause serious damage to your engine. Pre-ignition happens when the spark plug is too hot and fires before the piston is in the correct position.
Can I just clean my spark plugs instead of replacing them?
• No, cleaning your old spark plugs is not recommended. Dirty, fouled spark plugs may also have broken, chipped insulator tips, worn electrodes or worn or missing side wires. These conditions severely affect spark plug performance. Replace your dirty, fouled spark plugs with new ACDelco spark plugs.
Does ACDelco have marine spark plugs?
• Yes, ACDelco has marine spark plugs for many applications.

Limited Warranty:
100,000 Miles/Unlimited Months*
*To the original retail purchaser. Parts only; installation not included. See your local retailer or Independent Service Center that offers ACDelco Parts for details.

ACDelco Professional Iridium Spark Plugs

ACDelco Professional Iridium Spark Plugs

Loading...
ACDelco Professional Iridium Spark Plugs are the ideal high-quality replacement for many vehicles on the road today. They are the latest in spark plug technology and an exact replacement for your vehicle's original components. Iridium composition has the highest melting point and strength of all metals. It provides the greatest wear resistance and durability over Platinum and Conventional spark plugs. ACDelco Professional Iridium Spark Plugs provide the best wear resistance and durability of any spark plug. These premium aftermarket replacement iridium spark plugs are manufactured to meet and exceed your expectations for fit, form and function.
Function
Uses a high-voltage spark from the ignition coil to ignite the air/fuel mixture inside the engine's cylinders.
Signs of Wear & Troubleshooting
* Engine has trouble starting, hesitates, or cuts out.
* Sluggish engine performance, loss of engine power, or decreased fuel economy.
* Lack of acceleration or loss of speed when driving uphill.
* Cracks in the upper or lower portion of the spark plug insulator.
* Chipped or broken insulator tip.
* Damaged spark plug boot.
Good Maintenance Practices
It is important to inspect spark plugs at regular intervals for signs of deterioration. Follow these steps for removing spark plugs for inspection, servicing or replacement:
* Grasp the spark plug boot and gently rotate it 90 degrees counterclockwise. Pull the spark plug boot and cable away from the spark plug. If necessary, use spark plug boot removing tool. DO NOT grab or violently pull spark plug cables.
* Use the correct deep socket size to loosen each spark plug one or two turns. NOTE: To remove spark plugs from aluminum heads, allow the engine to cool. The heat of the engine, in combination with a spark plug that is still hot, may cause the spark plug threads to strip the cylinder head upon removal.
* Brush or air-blast dirt away from the well areas before removing spark plugs. CAUTION: Use goggles to protect eyes from dirt when applying compressed air to spark plug wells.
* Remove each spark plug and place each one in a tray by cylinder number. This will help identify and relate any unusual condition to the cylinder involved.
* Apply dielectric grease into the boot area to reduce the chance of exterior tracking on the buttress tower of the spark plug. This grease also promotes a good heat transfer between the spark terminal screw and boot terminal.
* Before installing new spark plugs, use a gap guide to make sure your new spark plugs have the correct gap. NOTE: ACDelco Professional Iridium Spark Plugs are pre-gapped during manufacturing. Never attempt to gap an ACDelco Professional Iridium Spark Plug. You could damage the spark plug. Replace the incorrectly gapped ACDelco Professional Iridium Spark Plug with one that is correctly gapped.
Limited Warranty
100,000 Miles/Unlimited Months*
*To the original retail purchaser. Parts only; installation not included. See your local retailer or Independent Service Center that offers ACDelco Parts for details.

U Groove Spark Plugs by Denso

U Groove Spark Plugs by Denso

Loading...
The U-Groove is Engineered for Greater Fuel Efficiency and Improved Throttle Response DENSO's patented U-Groove spark plug enables complete combustion by allowing the spark to fill the gap created by the U shape. The ball of fire created in the U-Groove develops a larger and hotter flash front that virtually eliminates excessive fouling and erratic starts caused by poor fuel mixtures. Even DENSO's "standard" spark plug is something special. The innovative design that helped to make DENSO spark plugs famous, the U-Groove plug employs a unique, channeled ground electrode designed to generate a larger spark nucleus at the point of ignition. Greater spark energy than ordinary plugs means improved flame travel, producing more complete, consistent, and efficient combustion.
Unique U-Groove Ground Electrode
The unique U-Groove ground electrode is one of the finest features of DENSO spark plugs. The electrode was developed to meet the demand for improved ignitability, necessary for increased efficiency in emission gas purification and fuel consumption.
Improved Ignitability
With the U-Groove ground electrode, firing can be greatly improved without increasing the spark plug gap.
Better Fuel Efficiency and Improved Throttle Response
The U-Groove ground electrode provides a larger spark stimulation and more complete combustion, resulting in better fuel efficiency and improved throttle response
Specification
* 100 percent pre-fired to ensure reliable operation
* Copper core center electrode for superior thermal conductivity
* Unique five-rib insulator reduces flashover and decreases voltage loss
* Dual copper and glass seal bonds the center electrode and insulator together for a gas-tight seal.
* Original Equipment in automotive applications
Benefits

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 conventional plugs

DENSO's patented taper cut U-Groove spark plug enables complete combustion by allowing the spark to fill the gap created by the U shape. The ball of fire created in the U-Groove develops a larger and hotter flash front that virtually eliminates excessive fouling and erratic starts caused by poor fuel mixtures. The U-Groove was designed for the automotive manufacturers to meet their emission standards and is used as an original equipment manufacturer supplied part.
All DENSO spark plugs are pre-fired at the factory to assure the highest quality possible. The insulators are made from purified alumina providing support for the center electrode, and prevent flashover and decreased voltage loss. The copper and glass mixture bonds the center electrode together to form a gas tight seal.

Double Platinum

Loading...
Platinum is Optimal to Maximize the Longevity and Enhance the Durability
DENSO is the pioneer in introducing platinum spark plugs to the automotive aftermarket, but has hardly been content to rest on that achievement. Conventional platinum plugs use platinum for only the center electrode, while the DENSO Double Platinum plug features platinum on both the center and ground electrodes. This precious metal fights corrosion and erosion, ensuring superior spark performance and maximum spark plug life capable of extended operation in excess of 60,000 miles.
Features
* Platinum center electrode
* Platinum ground electrode
* Premium shell construction with machine-rolled threads
Benefits

Superior thermal conductivity

Sustained spark performance over 60,000 miles

Reduced secondary required voltage, increased ignition efficiency
Satisfied customers, reduced shop comebacks

Iridium Long Life

Loading...
First Automotive Plug to Use Iridium!
The DENSO Iridium Long Life plug is fast becoming the standard for today's high-tech engines. Properties of DENSO's patented Iridium alloy have broken through the spark plug technology barrier. Employing a revolutionary new 360° laser-welding process, DENSO has created a spark plug unlike anything on the market today. Designed for durability under the most extreme conditions, DENSO's patented Iridium alloy is six times harder and eight times stronger than conventional Platinum and can handle temperatures in excess of 4,000°F. You'll enjoy more horsepower, faster easier starts, less misfires under heavy loads, plus better conservation of fuel at all times! Using the same laser welding process as the Iridium Power spark plug, DENSO designed a long life spark plug factory-installed on luxury vehicles by automakers such as GM, Toyota, Honda and Mitsubishi. Using its patented Iridium alloy, DENSO was able to shrink the center electrode to 0.7mm, dramatically improving ignitability and longevity.
Features
* Fine-wire iridium center electrode
* Platinum ground electrode
* 360 degree laser-welded spark tip
* Endures extreme temperatures greater than 4,000° F associated with high-performance ignition and special fuel systems.
Benefits

Sustained spark performance over 100,000 miles

Withstands higher pressures and temperatures

Reduced spark plug wear and erosion

Lasts up to three times as long as conventional plugs

Tapered cut improves firing performance by reducing quenching.

Platinum TT

Loading...
Loading...
Twin-Tip Design Proves Two Tips are Better Than One!
The Platinum TT concept originated from DENSO's latest original equipment spark plug technology, the Super Ignition Plug (SIP). Until recently, this OE iridium Twin-Tip design could only be found in the most technologically advanced automobiles. But now DENSO is offering this cutting-edge technology in a brand new platinum/titanium design customized for today's value-minded automotive enthusiasts. DENSO pioneered the use of platinum in spark plug manufacturing. To maximize the longevity and enhance the durability of the spark plug, DENSO applied platinum to both the center and ground electrodes. Platinum offers superior resistance to erosion and corrosion enabling DENSO to create a spark plug capable of consistent performance.
Features
* 1.1mm platinum center electrode
* Titanium-enhanced alloy ground electrode
* Minimum-quench electrode design
Benefits

Improved fuel economy

Faster starts

Enhanced flame propagation for increased engine efficiency

Free standing firing pad reduces quenching to generate a more powerful spark.

Iridium Power

Loading...
0.4mm Iridium Center Electrode Delivers Maximum Spark Energy
Iridium Power best demonstrates its performance improvement during acceleration. The world's smallest center electrode and specially shaped ground electrode deliver maximum spark energy while withstanding temperatures greater than 4000º F. These features combine to achieve higher ignitability and require lower spark voltage than ever before. As a result, acceleration improves in comparison with normal plugs.
Ignitability That's a Cut Above
To increase ignitability, the important point is to let the flame kernel produced by the spark to grow unobstructed. Normally, this can be accomplished by widening the spark gap. However, this causes spark voltage to increase, which has the opposite effect. Iridium Power uses DENSO's patented U-Groove ground electrode to achieve maximum ignitability while minimizing required voltage.
Features
* Tapered cut, U-Groove ground electrode
* Worlds smallest 0.4mm iridium center electrode
* Patented 360-degree laser welding assembly process
Benefits

Required ignition voltage reduced
Unsurpassed center electrode durability
Available for many performance and power sports applications, including Corvette, Viper, and Harley-Davidson
Improved spark ignition for maximum combustion, even with lean air-fuel mixtures

Iridium Racing

Loading...
Loading...
Reliable Ignition Under the Highest Speeds
Elite spark plugs for the serious racer, the DENSO Iridium Racing best demonstrates its performance improvement during acceleration. Experience more power and torque, as well as increased engine efficiency and fewer misfires when ignitability is difficult.

Features
* 0.4mm Iridium center electrode, the slimmest in the industry
* Patented self-cleaning insulator/electrode design
* Durable, reusable packaging protects spark plugs when not in use
* 100% pure Platinum 0.8mm ground electrode
* 360-degree laser welding assembly process
High Speed Performance
0.4mm Iridium-Rhodium alloy center electrode requires less voltage to fire and increases firing performance. 100% pure Platinum 0.8mm ground electrode reduces risk of melting the plug during harsh racing conditions.
1. Specification Includes Terminal
More power with an ideal combustion cycle. Through superb ignition performance and spark voltage, non-firing and misfires under a variety of conditions has been greatly reduced. As a result, combustion conditions have improved dramatically, increasing engine output.

2. Built-in, Highly Reliable Resistor

All Iridium Racing plugs specify a resistor, and contain a highly reliable monolithic-type resistor that blocks noise that may affect electronic devices. (IW06 has no resistor.)

3. Highly Corrosion Resistant, Burnished Nickel Plating

With burnished nickel plating on the housing, a high level of corrosion resistance has been realized. Also, because the amount on the threads is low, the damage to the female thread in the cylinder is reduced.

4. 360° Laser Welding

The process used to join the Iridium tip is a highly reliable 360° laser welding process* that enables the plug to withstand all kinds of driving conditions.
* This 360° laser welding method has been patented in the U.S.A. and Japan (Japan Patent No.: 2921524, U.S.A. Patent No.: 6078129)
5. Spark Cleaning Pocket

Between the center electrode and the insulator, a small pocket has been opened around the tip clearance. When there is carbon fouling or deposition, this part will discharge and burn off the carbon, restoring electrical resistance. This technology is patented by DENSO (Japan Patent No. 2727558).

6. Insulators for Racing

By using a new, strengthened insulator which was developed during numerous and repeated testing during racing trials, strength is improved by 20%.

7. Iridium Center Electrode - 0.4 mm Diameter 

At 0.4mm in diameter, the DENSO Iridium Power center electrode tip is the world’s smallest. It produces the hottest, most concentrated spark, while requiring the lowest voltage (5,000 less volts to fire than conventional spark plugs).

8. Silicone Oil Coating

During the start of the race, non-starting from carbon fouling and carbon deposits can be fatal. To stop this, the insulator has been coated with silicone. Using the water repellency of silicone, the insulator surface is isolated from moisture and carbon, preventing a decrease in resistance.

9. All-Platinum Ground Electrode

Compared to the nickel alloy used in conventional spark plugs, the high melting point of platinum will reduce such problems as ground electrode melting and wear. Also, the 0.8mm Platinum alloy is welded on and gapped without any bending, reducing residual stress and increasing durability.

10. Housing End Face Chamfer

To improve the tolerance to severe combustion conditions, the housing end-face chamfer has been enlarged. This camfer allows for slight inaccuracies in tuning. Also, this design facilitates better gas flow, which improves its self-cleaning performance to prevent carbon fouling.


Benefits

Handles extreme compression and boost levels
Ultimate performance and durability
Maximizes track time, minimizes downtime
Delivers maximum spark energy
Withstands temperatures greater than 4000° Fahrenheit. Improved Performance

Spark Plugs by NGK

Spark Plugs by NGK

Loading...
If you're seeking the right spark plug for your vehicle, try our part finder; or click a link below for more information on what NGK Spark Plugs offers for your application:
* Cars, Trucks and SUVs
* Motorcycles and ATVs
* Marine
* Snowmobiles
* Lawn and Garden
* Racing
For more information on colder heat range NGK Iridium IX Spark Plugs please click here
Cars, Trucks and SUVs
NGK is your first choice for automotive, truck & recreational vehicle spark plugs, with spark plugs for every make, model, and application. Utilizing a wide variety of materials, from standard copper-core type to Iridium, NGK is the world's leader in spark plug engineering and technology. All NGK Spark Plugs are OEM Approved.
Motorcycles and ATVs
NGK has spark plugs for virtually every Motorcycle, ATV, and Scooter application you can imagine.
NGK Spark Plugs are:
OEM Approved
Specified by more motorcycle manufacturers, including Honda, Kawasaki, KTM, Suzuki, and Yamaha, than any other spark plug company
Marine
NGK is one of the largest suppliers of spark plugs for marine applications in the world. Companies that include Honda, Mercury Marine, OMC, Suzuki, Tohatsu and Yamaha all specify NGK Spark Plugs as Original Equipment.
NGK produces spark plugs for almost every application, from outboards to stern drives, from small trolling motors to highly modified V8s.
NGK's cold-rolled threads help prevent spark plugs from seizing, even in aluminum heads or salt water conditions. And NGK's double-dipped zinc chromate coated metal shell makes them very corrosion resistant, even in harsh salt water environments.
Snowmobiles
NGK is the winter sports enthusiasts' first choice in snowmobile spark plugs, with spark plugs for virtually every sled application. Why?
Requires less firing voltage for easier extreme cold weather starting
Cold-rolled threads for easier installation and removal
Trivalent coating to resist corrosion
Easier starting and less fouling
Reduced emissions
Lawn and Garden
NGK offers a broad range of spark plugs for the homeowner and professional user. From push mowers, riders, tillers, and string trimmers to pumps, generators, compressors, and industrial equipment, we have the plug for you. From the copper core to the centre electrode, we manufacture our small engine spark plugs to perform under a wide variety of conditions to provide:
Easier starting
Less fouling
Reduced emissions
Corrosion resistant
Long Life
Racing
For many years, NGK Spark Plugs have been firing racing engines on every continent. NGK has become an icon in spark plug technology and we pride ourselves in offering racers a high quality product that will help rocket them to victory.
We realize race teams push their vehicles to the limits of endurance. With this in mind, we design every NGK Spark Plug to withstand severe mechanical and thermal shock associated with these high-revving, high-compression race engines. As a result of our superior quality, you'll have confidence knowing you have the world leader in spark plug technology solidly behind you.
NGK Spark Plugs can be found in every racing venue throughout the world. Whether you're a weekend warrior or an accomplished racer, NGK is sparking winners.

Spark Plug by NGK

Products" Spark Plugs

Loading...
Overview
If you're seeking the right spark plug for your vehicle, try our part finder; or click a link below for more information on what NGK Spark Plugs offers for your application:
* Cars, Trucks and SUVs
* Motorcycles and ATVs
* Marine
* Snowmobiles
* Lawn and Garden
* Racing
* For more information on colder heat range NGK Iridium IX Spark Plugs please click here
* Cars, Trucks and SUVs
NGK is your first choice for automotive, truck & recreational vehicle spark plugs, with spark plugs for every make, model, and application. Utilizing a wide variety of materials, from standard copper-core type to Iridium, NGK is the world's leader in spark plug engineering and technology. All NGK Spark Plugs are OEM Approved.
Motorcycles and ATVs
* NGK has spark plugs for virtually every Motorcycle, ATV, and Scooter application you can imagine.
NGK Spark Plugs are:
* OEM Approved
Specified by more motorcycle manufacturers, including Honda, Kawasaki, KTM, Suzuki, and Yamaha, than any other spark plug company
Marine
NGK is one of the largest suppliers of spark plugs for marine applications in the world. Companies that include Honda, Mercury Marine, OMC, Suzuki, Tohatsu and Yamaha all specify NGK Spark Plugs as Original Equipment.NGK produces spark plugs for almost every application, from outboards to stern drives, from small trolling motors to highly modified V8s.NGK's cold-rolled threads help prevent spark plugs from seizing, even in aluminum heads or salt water conditions. And NGK's double-dipped zinc chromate coated metal shell makes them very corrosion resistant, even in harsh salt water environments.
Snowmobiles
NGK is the winter sports enthusiasts' first choice in snowmobile spark plugs, with spark plugs for virtually every sled application. Why?
* Requires less firing voltage for easier extreme cold weather starting
* Cold-rolled threads for easier installation and removal
* Trivalent coating to resist corrosion
* Easier starting and less fouling
* Reduced emissions
* Lawn and Garden
NGK offers a broad range of spark plugs for the homeowner and professional user. From push mowers, riders, tillers, and string trimmers to pumps, generators, compressors, and industrial equipment, we have the plug for you. From the copper core to the centre electrode, we manufacture our small engine spark plugs to perform under a wide variety of conditions to provide:
* Easier starting
* Less fouling
* Reduced emissions
* Corrosion resistant
* Long Life
* Racing
For many years, NGK Spark Plugs have been firing racing engines on every continent. NGK has become an icon in spark plug technology and we pride ourselves in offering racers a high quality product that will help rocket them to victory.We realize race teams push their vehicles to the limits of endurance. With this in mind, we design every NGK Spark Plug to withstand severe mechanical and thermal shock associated with these high-revving, high-compression race engines. As a result of our superior quality, you'll have confidence knowing you have the world leader in spark plug technology solidly behind you.NGK Spark Plugs can be found in every racing venue throughout the world. Whether you're a weekend warrior or an accomplished racer, NGK is sparking winners!

Spark Plugs by Champion

Spark Plugs

Loading...
The iconic champion brand has been in global leader in spark plugs and is a catalyst for enhancing performance in every type of engine. Our broad range of plugs provide the performance characteristics you've come to except from our legendary brand.

Spark Plugs by Autolite

Autolite Warranties

Loading...
Iridium XP Lifetime Limited Warranty
Limited Warranty:
These Autolite(r) Iridium XP spark plugs are warranted to the original purchaser for the lifetime of the vehicle engine against plug failure due to electrode erosion or defects in materials and workmanship by Autolite(r), a division of FRAM Group Operations LLC. Autolite(r) will, at its option, replace or refund the purchase price of the failed spark plugs.Warranty Does Not Cover: Autolite(r) will not provide any warranty service if these spark plugs are not installed properly (including errors in application). Autolite(r) will not provide any warranty service if the spark plug shows evidence that it has been tampered with, misused, abused or altered. Autolite(r) makes no warranties, express or implied for its spark plugs, and specifically disclaims the implied warranties of merchantability and fitness for a particular purpose if its spark plugs are used for racing, custom or modified applications. Under no circumstances is Autolite(r) responsible for direct, incidental, special or consequential damages resulting from such uses of its products. Some states do not allow the exclusion or limitation of incidental, special or consequential damages, so the above exclusion or limitation may not apply to you. This limited warranty may not be transferred or assigned and is valid only to the original purchaser for so long as the original purchaser owns the vehicle.To make a claim under warranty: Call Autolite(r) at 1-888-293-5839. Dated proof of the purchase is required to process your claim. Always follow vehicle manufacturer's recommended change intervals if vehicle is under manufacturer warranty.

Double Platinum 5 Year Limited Warranty

Loading...
Limited Warranty:
These Autolite(r) spark plugs are warranted to the purchaser for the period of five years from the date of purchase against defects in materials and workmanship by Autolite(r), a division of FRAM Group Operations LLC.Warranty Does Not Cover: Autolite(r) will not provide any warranty service if these spark plugs are not installed properly (including errors in application) and maintained in accordance with service intervals recommended by the original equipment manufacturer. Autolite(r) will not provide any warranty service if the spark plug shows evidence that it has been tampered with, misused, abused or altered. Autolite(r)makes no warranties, express or implied for its spark plugs, and specifically disclaims the implied warranties of merchantability and fitness for a particular purpose if its spark plugs are used for racing, custom or modified applications. Under no circumstances is Autolite(r) responsible for direct, incidental, special or consequential damages resulting from such uses of its products. Some states do not allow the exclusion or limitation of incidental, special or consequential damages, so the above exclusion or limitation may not apply to you.To make a claim under warranty: Call Autolite(r) at 1-888-293-5839. Dated proof of the purchase is required to process your claim.

Platinum 4 Year Limited Warranty

Loading...
Limited Warranty:
These Autolite(r) spark plugs are warranted to the purchaser for the period of four years from the date of purchase against defects in materials and workmanship by Autolite(r), a division of FRAM Group Operations LLC.Warranty Does Not Cover: Autolite(r) will not provide any warranty service if these spark plugs are not installed properly (including errors in application) and maintained in accordance with service intervals recommended by the original equipment manufacturer. Autolite(r) will not provide any warranty service if the spark plug shows evidence that it has been tampered with, misused, abused or altered. Autolite(r)makes no warranties, express or implied for its spark plugs, and specifically disclaims the implied warranties of merchantability and fitness for a particular purpose if its spark plugs are used for racing, custom or modified applications. Under no circumstances is Autolite(r) responsible for direct, incidental, special or consequential damages resulting from such uses of its products. Some states do not allow the exclusion or limitation of incidental, special or consequential damages, so the above exclusion or limitation may not apply to you.To make a claim under warranty: Call Autolite(r) at 1-888-293-5839. Dated proof of the purchase is required to process your claim.

Copper 2 Year Limited Warranty

Loading...
Limited Warranty:
These Autolite(r) spark plugs are warranted to the purchaser for the period of two years from the date of purchase against defects in materials and workmanship by Autolite(r), a division of FRAM Group Operations LLC.Warranty Does Not Cover: Autolite(r) will not provide any warranty service if these spark plugs are not installed properly (including errors in application) and maintained in accordance with service intervals recommended by the original equipment manufacturer. Autolite(r) will not provide any warranty service if the spark plug shows evidence that it has been tampered with, misused, abused or altered. Autolite(r)makes no warranties, express or implied for its spark plugs, and specifically disclaims the implied warranties of merchantability and fitness for a particular purpose if its spark plugs are used for racing, custom or modified applications. Under no circumstances is Autolite(r) responsible for direct, incidental, special or consequential damages resulting from such uses of its products. Some states do not allow the exclusion or limitation of incidental, special or consequential damages, so the above exclusion or limitation may not apply to you.To make a claim under warranty: Call Autolite(r) at 1-888-293-5839. Dated proof of the purchase is required to process your claim.

Spark Plugs by Bosch

Double Iridium Spark Plugs

Loading...
Bosch Double Iridium Spark Plugs are engineered to deliver both high performance and long life, representing the best of OE spark plug technology. The ultra-fine wire design and laser welded tapered ground electrode deliver optimum performance, while the iridium center electrode and platinum ground electrode help it to go the distance. Unlock the performance in your engine with Bosch Double Iridium Spark Plugs.
Features
* Double Iridium electrodes - iridium firing pin and iridium ground electrode inlay offer higher performance
* OE Replacement: meets or exceeds manufacterer design requirements for modern gasoline engines to provide OE fit, form and function
* OE-matched spark position for compatibility with new Gasoline Direct Injection (GDI) technology
* 4X Longer Service Life: compared to standard copper spark plugs

Double Iridium Pin-To-Pin

Loading...
Bosch Double Iridium Pin-To-Pin Spark Plugs represent the best of original equipment (OE) spark plug technology and are manufactured to be OE equivalent in fit, form and function. The ultra-fine wire design firing pin and ground electrode pin provide higher performance.
Features
* Double Iridium firing pin and ground electrode pin on (application specific) pin-to-pin spark plugs
* Laser weld provides superior retention of iridium alloy pin to the ground electrode
* 0.6 mm fine wire firing pin for better ignitability and durability
* Double Iridium firing pin and ground electrode pin for higher performance
* OE-matched spark position for compatibility with new Gasoline Direct Injection (GDI) technology

Iridium Spark Plugs

Loading...
Bosch Iridium Spark Plugs are engineered to deliver both high performance and long life, representing the best of OE spark plug technology. The ultra-fine wire iridium center electrode pin delivers best performance. Unlock the performance in your engine with Bosch Iridium Spark Plugs.
Features
* Bosch original equipment design, materials and processes represent the best of OE technology
* Iridium center electrode tip
* Pre-gapped - no need to gap, providing faster installation.

Double Platinum Spark Plugs

Loading...
Bosch Double Platinum Spark Plugs are engineered for up to 3X longer service life.
Features
* Laser welded Platinum inlay ground electrode provides 3X longer service life
* Fine wire Platinum firing pin for better ignitability
* Unique 360 continuous laser weld fuses corrosion resistant Platinum firing pin to base.

Platinum Spark Plugs

Loading...
Bosch Platinum Spark Plugs are engineered for up to 2X longer service life.
Features
* Specially engineered Yttrium enhanced ground electrode provides 2X longer service life*
* Fine wire Platinum firing pin for better ignitability
* Unique 360 continuous laser weld fuses corrosion resistant Platinum firing pin to base

Super Plus Spark Plugs

Loading...
Bosch Super Plus, with a heavy-duty yttrium-enhanced copper core center electrode, is a long lasting copper core spark plug.
Features
* Heavy-duty yttrium-enhanced copper core center electrode
* Longest-lasting copper core spark plug on the market

Silver Spark Plugs

Loading...
Bosch Silver Spark Plugs are engineered for older European performance cars, as well as some motorcycle applications. These types of vehicle engines operate at particularly high combustion chamber temperatures, increasing the wear on the electrodes. Bosch uses silver alloys in the center electrode tip to resist wear and improve spark plug efficiency.
Features
* The center electrode tip is made from a silver alloy, ensuring long service life and ignition sparks with increased energy.
* Highly resistant to material erosion
* Improved spark plug efficiency
* Ribbed insulator design prevents misfires due to flash-over

Platinum+4 Spark Plugs

Loading...
Bosch Platinum+4 Spark Plugs deliver smoother acceleration, top fuel economy and ultimate engine performance. Bosch Platinum+4 Spark Plugs reach self-cleaning temperatures faster for quicker starts, smoother acceleration and increased fuel efficiency.
Features
* Surface air gap technology
* Platinum center electrode tip
* Four yttrium-enhanced ground electrode tips
* Surface Air Gap Design: The Platinum+4 delivers a powerful spark for efficient combustion
* Re-gapped: Installation is fast because there's no need to gap

Spark Plugs by Autolite

Autolite(r) Spark Plugs

Loading...
Since its inception, the Autolite(r) brand has provided the automotive aftermarket and Original Equipment manufacturers the highest quality ignition products. We have been in operation for over 100 years and have produced more than 11 billion spark plugs and glow plugs. Our plugs are specifically designed for each application to meet or exceed OE quality and performance. Autolite makes plugs for Japanese, European and Korean cars as well as plugs for Lawn & Garden and Power Sports. As a leading supplier of spark plugs, ignition wire sets and Coil-on-Plug boots, the Autolite brand has the right ignition products for your vehicle, regardless of make or model, import or domestic. Autolite(r) Iridium XP Enhanced Alloy Technology(tm) Spark Plugs
These spark plugs are one of the brand's most technologically advanced spark plugs ever. With an iridium-enhanced 0.6 mm finewire design and proprietary platinum sidewire technology, these spark plugs provide better durability* and a more focused ignition for better overall ignitability and optimum performance.
Now with A Lifetime Limited Warranty
Compared to 0.8mm finewire, multi-electrode design and standard plugs
Compared to average of other premium brands

Autolite(r) Double Platinum Spark Plugs

Loading...
Features platinum-to-platinum firing. Virtually eliminates gap erosion, reduces misfires, and provides improved durability. It's the superior-performing spark plug providing preferred technology for DIS engines. Guaranteed for 5 years.
Compared to standard plugs
For more warranty details, view the Autolite Spark Plug Catalog

Autolite(r) Platinum Spark Plugs

Loading...
Provides a center wire platinum firing tip. Benefits include: reduced gap erosion, fewer misfires, better performance and more durability. Guaranteed for 4 years. For more warranty details, view the Autolite Spark Plug Catalog

Autolite(r) Copper Spark Plugs

Loading...
Guaranteed to deliver quick starts, good fuel economy and smooth acceleration. Autolite(r) Copper Core plugs are your industry standard.

Autolite Revolution HT(r) High Thread Spark Plugs

Loading...
A unique, patented design that results in more durability and greater power from a more comprehensive seal, improved heat transfer and more focused ignition power.

Autolite(r) Glow Plugs

Loading...
Starting a diesel engine? Check out Autolite(r) Glow Plugs. They're dependable and long-lasting, the perfect plug for a variety of diesel applications.
America's Best Selling Glow Plugs
NASCAR Performance is a registered trademark of the National Association for Stock Car Auto Racing, In
Racing Spark Plugs
For racing and other high performance engines, Autolite Iridium XP Enhanced Alloy Technology(tm) Spark Plugs offer an iridium-enhanced .6mm finewire with better overall ignitability and durability in a Hi-Performance category. In addition, the Autolite Revolution HT(r) High Thread spark plugs are specifically designed for Hi-Performance deliverance in Ford Motor Company(r)'s 4.6L, 5.4L, and 6.8L 3-valve engines.

Autolite Racing(r) Hi-Performance Spark Plugs

Loading...
Actual racing spark plug used by many professional car drivers. Provides cut back ground electrode, anti-corrosive nickel plating and large ground electrode for better heat transfer.
NASCAR Performance is a registered trademark of the National Association for Stock Car Auto Racing, Inc.