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Autolite Copper Core Spark Plugs

Autolite copper core spark plugs feature a cold-formed steel shell with precision-rolled threads, a full copper core electrode for better performance, and a one-piece terminal post to add strength. The ignition plugs use a copper-glass seal that bonds the insulator and terminal post center electrode together. This ensures full voltage at the spark gap and a 100 percent leak-proof, gas-tight seal. Autolite features an extensive application guide to cover just about everything with an internal combustion engine. Keep your engine running smoothly and reliably with Autolite replacement copper core spark plugs.

4.82 out of 5 stars ( 237 )

$4.99

E3 Spark Plugs

Energy, efficiency, and ecology--that's the E3 equation! The unique patented electrode configuration of the E3 spark plugs increases the amount of combustion pressure created during each power stroke of an engine. This, of course, results in a marked increase in power output, fuel economy, and reduced emissions in all gasoline engines.

4.64 out of 5 stars ( 703 )

$7.49

NGK Standard Series Spark Plugs

NGK Standard Series spark plugs are designed for stock replacement applications. These plugs have a hotter spark, which means better combustion—and that improves performance, while producing less harmful emissions. They're available in a variety of options for both universal and specific vehicle applications. Get the spark plugs used by winning racers: NGK Standard Series.

4.86 out of 5 stars ( 229 )

$3.99

Champion Copper Plus Spark Plugs

Champion Copper Plus spark plugs have been original equipment on a wide variety of engines for many years. They feature nickel alloy centers and ground electrodes with efficient wear characteristics. In addition, the spark plugs' extrusion of copper into the center electrode allows for increased conductivity and heat control. Manufacturers have used them in non-automotive applications, such as lawn and garden and other power equipment. Replace your old plugs with Champion Copper Plus spark plugs for maximum reliability.

4.82 out of 5 stars ( 176 )

$3.99

Autolite XP Xtreme Performance Spark Plugs

Autolite XP Xtreme Performance spark plugs feature an iridium-enhanced, .6mm, fine-wire center electrode design and patented platinum side wire technology. They will provide better overall durability and a more focused ignition to produce higher ignitability and improved performance. The Autolite XP Xtreme Performance spark plugs use a nickel plated shell and multi-rib insulator. Whether you have a high performance street car, race car, or daily driver, Autolite XP Xtreme Performance spark plugs will give you the power and consistency that you have been looking for.

4.68 out of 5 stars ( 19 )

$6.99

Autolite XS Xtreme Sport Spark Plugs

Autolite XS Xtreme Sport spark plugs are engineered to meet or exceed original equipment designs and withstand the extreme operating temperatures experienced in your powersports engine's combustion chamber. They were designed with iridium-enhanced, 0.6mm fine wire center electrodes for reduced fouling, improved ignitability, faster combustion, and more focused ignition compared to standard plugs. Autolite XS Xtreme Sport spark plugs also provide quicker starts and lower hydrocarbon emissions than standard plugs. They give you better fuel efficiency and more horsepower! Order the universal or vehicle-specific model recommended for your application.

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$6.99