Description:

Denso Spark Plug Densos standard plugs have always offered a patented U-groove ground electrode producing for a larger, hotter spark. Copper core for better thermal conductivity. Machine rolled threads to reduce cross-threading and seizing. The plug insulator is constructed of purified alumina powder for extreme stress with 5 ribs to prevent flashover. Technical Specifications - 14mm Thread, 19mm (3/4") Reach, 13/16" (20. 6mm) Hex Size, Gasket Seat, Resistor, Removable Terminal, Projected Tip, U-Groove Ground Electrode,. 027" (0. 7mm) Gap Model # W16EPR-U Features: W16EPR-U Increases engine performance and throttle response Efficient fuel consumption Improved cold-starting Stable combustion during idling.