Designed to operate over a much wider heat range than ordinary plugsResists carbon buildup and pre-ignitionHigh alumina ceramics for better heat transfer and electrical insulationSolid copper core and nickel tipped electrode provide a longer plus lifePatented triple gasket sealing process eliminates the possibility of combustion gas leakageLaser welded Iridium center electrode tip ensures high durability and greater sparkPlatinum disc welded to backside of ground electrode provides long lifeLonger insulator nose prevents fouling, the corrugated ribs on insulator prevents flashover, and a triple gasket seal eliminates combustion gas leakageFaster starts and quicker accelerationBetter fuel economy and lower emissions, trivalent metal plating for superior anti-corrosion and anti-seizingNGK Spark Plugs are designed to operate over a much wider heat range than ordinary plugs. They resist carbon buildup and pre-ignition. Each features high alumina ceramics for better heat transfer and electrical insulation. A patented triple gasket sealing process eliminates the possibility of combustion gas leakage, and a longer insulator nose prevents fouling and misfiring. A solid copper core and its nickel tipped electrode provide a longer plus life.