NGK Racing Spark Plug Box of 4 (R7376-9)

This is a box of four NGK Racing spark plugs, part number R7376-9. These plugs are built specifically for the demands of racing, designed to handle the extreme heat and pressure found in grueling competition. The center electrode features special designs to ensure it stays durable and ignites reliably, even under the harshest engine conditions you'll encounter on the track.

NGK uses a pure alumina silicate ceramic insulator that offers superior strength and helps transfer heat away from the plug effectively. You'll also find special insulator nose configurations that can help improve throttle response, and corrugated ribs on the insulator body to prevent flashover. The copper core inside the plug is a key component for aiding heat removal, and the triple seals are there to prevent any leaks.

Because these are racing plugs, they are intended for racing applications. The trivalent metal plating on the exterior helps resist corrosion and seizing, making installation and removal easier when you need to service them.