Spark Plugs

Superior construction for serious powerVersatile plugs with wide operating heat ranges prevent fouling from running too cool and preignition from running too hotFeatures high alumina ceramics for improved heat dissipation and electrical insulation,...

Designed for a sharper, leaner spark with tapered nickel/chrome alloy tip and copper center electrodeMade in the U.S.A.

Designed for a sharper, leaner spark with tapered nickel/chrome alloy tip and copper center electrodeMade in the U.S.A.

Designed for a sharper, leaner spark with tapered nickel/chrome alloy tip and copper center electrodeMade in the U.S.A.

Superior construction for serious powerVersatile plugs with wide operating heat ranges prevent fouling from running too cool and preignition from running too hotFeatures high alumina ceramics for improved heat dissipation and electrical insulation,...

100 percent pre-fired to ensure reliable operationCopper core center electrode for superior thermal conductivityUnique five-rib insulator reduces flashover and decreases voltage lossDual copper and glass seal bonds the center electrode and insulator...

100 percent pre-fired to ensure reliable operationCopper core center electrode for superior thermal conductivityUnique five-rib insulator reduces flashover and decreases voltage lossDual copper and glass seal bonds the center electrode and insulator...

100 percent pre-fired to ensure reliable operationCopper core center electrode for superior thermal conductivityUnique five-rib insulator reduces flashover and decreases voltage lossDual copper and glass seal bonds the center electrode and insulator...

100 percent pre-fired to ensure reliable operationCopper core center electrode for superior thermal conductivityUnique five-rib insulator reduces flashover and decreases voltage lossDual copper and glass seal bonds the center electrode and insulator...

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

100 percent pre-fired to ensure reliable operationCopper core center electrode for superior thermal conductivityUnique five-rib insulator reduces flashover and decreases voltage lossDual copper and glass seal bonds the center electrode and insulator...

The ultimate in the evolution of spark plug technology and performance from the industry leaderThe iridium electrode is 25% smaller than a platinum electrode, and it's just 1/4 the size of a conventional nickel electrodeUltra-small diameter center...