Denso Nickel Spark Plug S31A / 3111 Replaces 067700-4830 N319-18-110 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): 68 Width (mm): 24.5 Length (mm): 92If 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.