NGK R2556B-8 Racing Competition Spark Plugs

FREE SHIPPING WITHIN THE US!  Description: Upgrade your factory spark plugs with these performance Competition NGK Racing plugs. NGK Racing Series Plugs are Engineered to Withstand the Harshest Engine Conditions. Fine Wire Iridium Tipped Center Electrode and Fine Wire Platinum Tipped Ground Electrode Ensures Slow Wear Rate Providing Stable Idle, Superior Anti Fouling, Improved Fuel Efficiency and Lower Emissions. Special Insulator nose configurations improve throttle response Corrugated ribs prevent flashover Pure Alumina Silica Ceramic Insulator.   Provides superior strength and better heat transfer Copper Core aids in heat removal Triple seal prevents leakage Sold as a set of 4 spark plugs   Plug Specifications: Center Electrode: Ground Electrode: Thread Size: 12mm Type: Fine Wire Type: Fine Wire Hex Size: 5/8" (16mm) Material: Iridium Material: Platinum Reach: 25.6mm Projection: Non-Projected   Seat Type: Fasket     Gap: .028" (0.7mm)     Heat Range: 8     Term