Bosch OE Fine Wire Double Iridium Spark Plugs feature both an iridium firing pin and an iridium ground electrode inlay that offer higher performance and 4X longer life compared to standard copper spark plugs 360-degree laser welded ultra-fine wire iridium firing pin provides better ignitability - reducing voltage requirements up to 24% - and enhanced durability Nickel-plated rolled threads provide exceptional resistance to corrosion and do not require anti-seize - making installation quick and easy Bosch OE Fine Wire Double Iridium spark plugs are pre-gapped at the factory and ready to install right out of the box - gap adjustment prior to installation not required Meets or exceeds manufacturer design requirements for OE fit, form, and function for modern gasoline engines - including Gasoline Direct Injection (GDI) engines Compatible with select vehicles including, but not limited to, the following (Note: engine affects fitment - verify specific fitment details with fit checker above): AMC: 1981-83 Concord, 1980-88 Eagle, 1981-83 Spirit; CHRYSLER: 1993-97 Concorde Compatible with (continued): CHRYSLER: 1994-97 LHS, 1994-96 New Yorker; DODGE: 1996-02 Dakota, 1993-97 Intrepid, 2004-06 Ram 1500, 1992-06 Viper; EAGLE: 1988-89 Premier, 1993-97 Vision; JEEP: 1981-01 Cherokee, 1980-83 CJ5, 1980-86 CJ7 Compatible with (continued): JEEP: 1986-92 Comanche, 1979,1981-83 DJ5, 1993-04 Grand Cherokee, 1984-86 Grand Wagoneer, 1980-87 J10, 1981-86 Scrambler, 1997-06 TJ, 1981-87 Wagoneer, 1987-95,1997-06 Wrangler; PLYMOUTH: 1997 Prowler