NGK R2525-10 5281 Spark Plug

NGK Racing Series plugs are engineered to withstand the harshest engine conditions. Fine wire platinum tipped center electrode improves ignitability, increases durability and enhances anti fouling capabilities. Special insulator nose configurations improve throttle response. 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. Specifications: Shell: - Thread Diameter: 12mm - Thread Pitch: 1.25mm - Seat Type: Gasket - Reach: 19mm (3/4´´) - Hex Size: 5/8´´ (16mm) - Terminal Type: Removable Nut - Overall Height: ISO - Gap: 024´´ (0.6mm) - Center Electrode - Material: Platinum - Type: Fine Wire - Size: 1.3mm - Projection: Non-Projected - Ground Electrode - Material: Nickel - Type: Slant - Quantity: 1 - Resistor: Yes - Resistor Value: 5k Ohm - Heat Range: 10 - Torque SpecsCast Iron: 10.8-18 lb. ft. Aluminum: 10.8-14.5 lb. ft.