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 leakage45 degree V-Power center electrode increases anti-fouling characteristics and performanceIncreased fuel economy and lower emissionsLowers ignition system voltage requirementsGreater ignitability and performance over conventional spark plugsTrivalent metal plating has superior anti-corrosion and anti-seizing propertiesStens 130-757 NGK TR5 Spark Plug