NGK spark plugs provide high ignitability and a long service life. These plugs from NGK operate over a wider heat range than ordinary spark plugs. Each NGK spark plug features high alumina ceramics for better heat transfer and electrical insulation. The patented triple gasket sealing process eliminates the possibility of combustion gas leakage Key Features Trivalent metal plating provides superior anti-corrosion and anti-seizing properties Corrugated ribs prevent flashover Pure alumina silicate ceramic insulator provides superior strength and better heat transfer Copper core aids in heat removal Triple seals prevent leakage Longer insulator nose prevents fouling and misfiring Resistant to carbon buildup and pre-ignition Specifications Electrode Material: Nickel Core Material: Copper Plug Selection To ensure optimum performance please consult your owner's manual to determine the correct spark plug for your engine.