BCPR7ES-11 NGK SPARK PLUG GRP2 3922NGK standard plugs are constructed for longer life and optimum performance.Trivalent metal plating provides superior anti-corrosion and anti-seizing propertiesCorrugated ribs prevent flashoverPure alumina silicate ceramic insulator, provides superior strength and better heat transferCopper core aids in heat removalTriple seals prevent leakage - ShellThread Diameter14mmThread Pitch1.25mmSeat TypeGasketReach19mm (3/4"")Hex Size5/8"" (16mm)Terminal TypeSolidOverall HeightJISGap.043"" (1.1mm)Center ElectrodeMaterialNickelTypeStandardSize2.5mmProjectionProjectedGround ElectrodeMaterialNickelTypeStandardQuantity1SpecificationsResistorYesResistor Value5k OhmHeat Range7Torque SpecsCast Iron: 18-25.3 lb. ft. Aluminum: 18-21.6 lb. ft.Part InformationBrandNGK/NTKWarranty60 DaysLongevity30k Miles