NGK 5913 ZFR7F V-Power Spark Plug NGK single iridium plugs were designed specifically for the performance enthusiast. Fine wire center electrode ensures high durability and a consistently stable spark. Iridium alloy has an extremely high melting point, perfect for today's high-tech, high performance engines. Trivalent metal plating provides superior anti-corrosion and anti-seizing properties Corrugated ribs prevent flashover Pure alumina silicate ceramic insulator, provides superior strength and better heat transfer Copper core aids in heat removal Triple seals prevent leakage Product Specifications Shell Thread Diameter14mm Thread Pitch1.25mm Seat Type Gasket Reach19mm (3/4") Hex Size5/8" (16mm) Terminal Type Solid Overall Height ISO Gap.031" (0.8mm) Center Electrode Material Iridium Type Fine Wire Size0.6mm Projection Extended Projection Ground Electrode Material Platinum Type Standard Shape Taper Cut Quantity1 Specifications Resistor Yes Resistor Value5k Ohm Heat Range5 Torque Specs: Cast Iron: 18-25.3 lb. ft. Aluminum: 18-21.6 lb. ft.
