NGK Racing Spark Plug Box of 4 (R6601-10)

NGK is known worldwide for powering racing champions, and their Racing Series spark plugs are built to handle the toughest conditions you can throw at them. These R6601-10 plugs are specifically designed for extreme use, ensuring durability and reliable ignition even in grueling racing environments. They bring ultra-high performance across a variety of heat ranges, with special configurations tailored for diverse racing applications.

The center electrode on these NGK Racing plugs features special designs to ensure both durability and consistent ignitability. You'll also find a pure alumina silicate ceramic insulator that offers superior strength and better heat transfer. The special insulator nose configurations are there to help improve throttle response, and the corrugated ribs help prevent flashover. Plus, the copper core aids in heat removal, and triple seals work to prevent leakage, making installation and removal easier thanks to superior anti-corrosion and anti-seizing properties from the trivalent metal plating.