U-Groove Spark Plug — W16FS-U View cart “U-Groove Spark Plug — W20EP-U” has been added to your cart. $2.95 PART NUMBER: W16FSURMM PART: W16FS-U BRAND: DENSO NC NY TX WI NV 0 0 0 0 0 W16FSU,W16FS-U,DENSO please contact sales at (800)482-4899 to place your order. SKU: 3034 Category: DENSO Features 100 percent pre-fired to ensure reliable operationCopper core center electrode for superior thermal conductivityUnique five-rib insulator reduces flashover and decreases voltage lossDual copper and glass seal bonds the center electrode and insulator together for a gas-tight seal.Original Equipment in automotive applications Related products U-Groove Spark Plug — X27ES-USpark Plug – X27ES-U $3.95 PART NUMBER: X27ESURMM PART: X27ES-UMANUFACTURER NAME: DENSO NC NY TX WI NV 16 0 0 20+ 0 Add to cart Iridium Spark Plug — IU22Iridium Spark Plug – IU22 $14.95 PART NUMBER: IU22RMM PART: IU22MANUFACTURER NAME: DENSO NC NY TX WI NV 8 7 4 20+ 6 Add to cart U-Groove Spark Plug — X24ESR-USpark Plug – X24ESR-U $3.95 PART NUMBER: X24ESRURMM PART: X24ESR-UMANUFACTURER NAME: DENSO NC NY TX WI NV 4 0 7 20+ 14 Add to cart Iridium Spark Plug — IW31Iridium Spark Plug – IW31 $24.95 PART NUMBER: IW31RMM PART: IW31MANUFACTURER NAME: DENSO NC NY TX WI NV 8 0 2 0 0 Add to cart