NGK (3332) XR5 V-Power Spark Plug, Pack of 1 Designed to operate over a much wider heat range than ordinary plugs Resists carbon buildup and pre-ignition High alumina ceramics for better heat transfer and electrical insulation Solid copper core and nickel tipped electrode provide a longer plus life Patented triple gasket sealing process eliminates the possibility of combustion gas leakage 45 degree V-Power center electrode increases anti fouling characteristics and performance Increased fuel economy and lower emissions Lowers ignition system voltage requirements Greater ignitability and performance over conventional spark plugs Trivalent Metal Plating has superior anti-corrosion and anti-seizing properties