Denso 3157 Double Platinum Spark Plug , Pack of 1

Denso Double Platinum Spark Plug Denso's ZU series offer high performance at an economical price. A tapered point 0.7mm platinum center electrode provides optimal throttle response during acceleration and burns a leaner fuel mixture at cruising RPM for better mileage. The U-groove ground electrode creates a larger, brighter flame kernel. The tip of the ground electrode has been tapered which further improves firing performance by reducing quenching. Technical Specifications - 14mm Thread, 19mm (3/4") Reach, 5/8" (16mm) Hex Size, Gasket Seat, Resistor, Removable Terminal, Projected Tip, 0.7mm Platinum Tipped Center Electrode, Tapered Cut U-groove Ground Electrode, .044" (1.1mm) Gap