NGK Nickel Spark Plug (R5674-6)

If you're pushing your engine hard on the track or in demanding racing conditions, you need spark plugs that can keep up. These NGK R5674-6 spark plugs are built with extreme use in mind, designed to withstand the most grueling racing environments. They've powered champions across various racing venues worldwide, showing they can handle serious performance demands.

The center electrode on these NGK racing plugs features special designs to ensure both durability and reliable ignitability, even under intense stress. They come in a variety of heat ranges to suit different racing applications. The pure alumina silicate ceramic insulator offers superior strength and helps with heat transfer, while the trivalent metal plating provides excellent resistance to corrosion and seizing, making installation and removal easier. Plus, the corrugated ribs help prevent flashover, and the copper core aids in heat removal, all sealed with triple seals to prevent leaks.