Denso 3417 Spark Plugs, (Pack of 1)

Specifications:

* 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.
* Lasts up to three times as long as conventional plugs