The original lug nut on certain vehicles has a failure-prone two-piece design that makes rust common and repair difficult. This Dorman OE FIX replacement has a one-piece, carbon steel design to prevent future problems. This part is compatible with the following vehicles. Before purchasing, enter your vehicle trim in the garage tool to confirm fitment. [Ford E-100 Econoline Club Wagon: 1980, 1981, 1982, 1983] - [Ford E-100 Econoline: 1980, 1981, 1982, 1983] - [Ford E-150 Econoline Club Wagon: 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994] - [Ford E-150 Econoline: 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994] - [Ford Fairmont: 1978, 1979, 1980, 1981, 1982, 1983] - [Ford LTD: 1983, 1984, 1985, 1986] - [Ford Mustang: 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 2000, 2001, 2002, 2003, 2004] - [Ford Thunderbird: 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988] - [Lincoln Mark VI: 1980, 1981, 1982, 1983] - [Lincoln Mark VII: 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992] - [Mercury Capri: 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986] - [Mercury Cougar: 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988] - [Mercury Marquis: 1983, 1984, 1985, 1986] - [Mercury Zephyr: 1978, 1979, 1980, 1981, 1982, 1983]