NGK Racing Spark Plug Box of 4 (R5670-7)

The center electrode on these NGK Racing spark plugs features special configurations designed for durability and ignitability under extreme racing conditions. They are built to handle the most grueling demands you can throw at an engine. NGK has a long history of powering champions across various racing venues worldwide.

These plugs bring ultra-high performance across a variety of heat ranges, thanks to their unique insulator nose configurations that help improve throttle response. The copper core is key here, as it aids significantly in heat removal from the combustion chamber, keeping things running cooler and more consistently. Plus, the trivalent metal plating offers solid anti-corrosion and anti-seizing properties, making installation and removal much easier, even after hard use. You'll also find corrugated ribs on the insulator to prevent flashover, and triple seals to ensure there are no leaks.