Bosch OE Fine Wire Double Platinum Spark Plugs feature a platinum firing pin and ground electrode inlay that provide 3X longer service life compared to standard copper plugs Unique 360 degree, continuous laser welded fine wire platinum firing pin design delivers better corrosion resistance, ignitability, and performance Nickel-plated rolled threads provide superior resistance to corrosion and do not require anti-seize for installation Bosch Double Platinum 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 Compatible with select vehicles (Note: engine affects fitment - verify specific fitment details with amazon confirmed fit fit checker above): AMC: 1981-83 Concord, 1980-88 Eagle, 1981-83 Spirit; CHRYSLER: 1993-97 Concorde, 1994-97 LHS, 1994-96 New Yorker Compatible with (continued): 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, 1986-92 Comanche, 1979,1981-83 DJ5 Compatible with (continued): JEEP: 1993-04 Grand Cherokee, 1984-86 Grand Wagoneer, 1980-87 J10, 1981-86 Scrambler, 1997-06 TJ, 1981-87 Wagoneer, 1987-95 Wrangler, 1997-06 Wrangler; PLYMOUTH: 1997 Prowler