Denso Nickel Spark Plug W27S-U / W27SU / 4055 Replaces 067600-5780 42W U-Groove is an innovative design that helped to make DENSO spark plugs famous. The plug employs a unique, channeled ground electrode designed to generate a larger spark nucleus at the point of ignition.Copper glass seal helps heat dissipation Standard U-groove Deeply inserted copper core Heat resistant nickel platingDIMENSIONS: Height (mm): 50 Width (mm): 24.5 Length (mm): 85If you are unsure as to whether this is the correct part for your vehicle, please don\'t hesitate to contact us. Alternatively please use the cross reference table above.