Iridium Spark Plug — IW31 View cart “U-Groove Spark Plug — W27ES-U” has been added to your cart. $24.95 PART NUMBER: IW31RMM PART: IW31 BRAND: DENSO NC NY TX WI NV 8 0 2 0 0 IW31,IW31,DENSO 10 in stock Iridium Spark Plug — IW31 quantity Add to cart SKU: 5319 Category: DENSO Features Six times harder than platinum, iridium withstands temperatures up to 4,000°FBecause the iridium electrodes of these plugs can be shrunk to only 0.4mm, voltage requirements decrease while firing performance improves360° laser welding of electrode provides a seal that resists wear even in the worst conditionsGround electrode features a tapered cut and U-groove that form a large volume area for the flame's center Related products U-Groove Spark Plug — W24ESR-USpark Plug – W24ESR-U $3.95 PART NUMBER: W24ESRURMM PART: W24ESR-UMANUFACTURER NAME: DENSO NC NY TX WI NV 18 20+ 0 20+ 4 Add to cart U-Groove Spark Plug — X22ES-USpark Plug – X22ES-U $3.95 PART NUMBER: X22ESURMM PART: X22ES-UMANUFACTURER NAME: DENSO NC NY TX WI NV 0 0 0 3 10 Add to cart Iridium Spark Plug — IX24BIridium Spark Plug – IX24B $14.95 PART NUMBER: IX24BRMM PART: IX24BMANUFACTURER NAME: DENSO NC NY TX WI NV 20+ 6 9 20+ 20+ Add to cart Iridium Spark Plug — IU24AIridium Spark Plug – IU24A $14.95 PART NUMBER: IU24ARMM PART: IU24AMANUFACTURER NAME: DENSO NC NY TX WI NV 6 3 6 18 0 Add to cart