Denso 4099 Spark Plug -X24ES-U

Product Description

Denso's 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.

• Denso # 4099 • Denso Traditional Nickel Spark Plug • NOTE: Plug has threaded terminal stud and does not contain terminal nut. If terminal nut is needed, order part#067606-0051 • U-Groove Ground Electrode