pzfr6h,spark plug, double platnum, 14mm thread, .750 in. reach, 5/8 in. hex, gasket seat, resistor, each

NGK's Laser Platinum Series Plugs Provide High Ignitability and Longer Service Life. Laser Welded Dual Platinum Surfaces Ensure Slow Wear Rate Providing Stable Idle, Superior Anti Fouling, Improved Fuel Efficiency and Lower Emissions. 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. Plug Specifications: Thread Size: 14mm. Hex Size: 16mm. Reach: 19mm. Seat Type: Gasket. Gap: 0.8mm. Heat Range: 6. Terminal Type: Solid. Resistor: Yes. Overall Height: ISO. Thread Pitch: 1.25mm.