NGK Spark Plug - B8HS

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NGK standard plugs are constructed for longer life and optimum performance. Trivalent metal plating provides superior anti-corrosion and anti-seizing properties Corrugated ribs pre vent flashover Pure alumina silicate ceramic insulator, provides superior strength and better heat transfer Copper core aids in heat removal Triple seals prevent leakage Shell Thread Diameter 14mm Thread Pitch 1.25mm Seat Type Gasket Reach 12.7mm (1/2") Hex Size 13/16" (21mm) Terminal Type Removable Nut Overall Height ISO Gap .039" (1.0mm) Center Electrode Material Nickel Type Standard Size 2.5mm Projection Non-Projected Ground Electrode Material Nickel Type Standard Specifications Resistor No Resistor Value 1K Ohm Heat Range 8 Torque Specs Cast Iron: 18-25.3 lb. ft. Aluminum: 18-21.6 lb. ft. Show more