NGK Multi-Ground Spark Plug is manufactured to deliver excellent fuel ignition and throttle response. It is constructed from durable material that is corrosion and abrasion resistant. This spark plug includes multi-ground electrodes which improves ignition capabilities and are less sensitive to increased voltage requirement. It features corrugated ribs, pure alumina silicate ceramic insulator for greater strength and better heat transfer, copper core and triple interior seal. This spark plug can be installed easily. You can depend on NGK for quality and reliability Constructed from durable material Corrosion and abrasion resistant Features corrugated ribs, ceramic insulator, copper core and triple interior seal Easy installation