Iridium Spark Plug — IW31 View cart “Iridium Spark Plug — IWF24” 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 Iridium Spark Plug — IW20Iridium Spark Plug – IW20 $11.95 PART NUMBER: IW20RMM PART: IW20MANUFACTURER NAME: DENSO NC NY TX WI NV 2 1 5 11 6 Add to cart Iridium Spark Plug — IX27Iridium Spark Plug – IX27 $14.95 PART NUMBER: IX27RMM PART: IX27MANUFACTURER NAME: DENSO NC NY TX WI NV 6 2 13 20+ 0 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 5 0 0 18 10 Add to cart U-Groove Spark Plug — W27ESR-USpark Plug – W27ESR-U $3.95 PART NUMBER: W27ESRURMM PART: W27ESR-UMANUFACTURER NAME: DENSO NC NY TX WI NV 0 0 0 20+ 20+ Add to cart