Nickel Spark Plug by NGK NGK standard plugs are constructed for longer life and optimum performance. Features Trivalent metal plating Corrugated ribs Pure alumina silicate ceramic insulator Copper core aids in heat removal Triple seals prevent leakage Benefits Improved ignitability Increased durability Enhanced anti fouling capabilities Superior anti-corrosion and anti-seizing properties Prevent flashover provides superior strength and better heat transfer Applications Universal What’s In The Box? 1 – Nickel Spark Plug Warranty 60 Day Warranty