SPARK PLUG

The DENSO Standard U-Groove Spark Plug employs a unique, channeled ground electrode designed to generate a larger spark nucleus at the point of ignition. Greater spark energy means improved flame travel, producing more complete, consistent, and efficient combustion. The electrode was developed to improve ignitability for increased efficiency in emission gas purification and fuel consumption. This spark plug fires leaner mixtures than conventional plugs and improves throttle response. It is 100 percent pre-fired to ensure reliable operation and lasts twice as long as conventional plugs. The unique five-rib insulator reduces flashover and decreases voltage loss while the dual copper and glass seal combines the center electrode and insulator together for a gas-tight seal.