This replacement engine coolant thermostat housing is engineered to match the fit and durability of the stock thermostat housing on specified vehicles. It is designed to withstand extreme temperature changes to extend service life. Vehicle model years this part fits (be sure to check your vehicle trim using the Amazon garage) - [Ford Fairmont: 1978, 1979, 1980, 1981, 1982, 1983] - [Ford Granada: 1981, 1982] - [Ford LTD: 1983, 1984, 1985] - [Ford Mustang: 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1991, 1992, 1993] - [Ford Pinto: 1978, 1979, 1980] - [Ford Thunderbird: 1983, 1984, 1985, 1986, 1987, 1988] - [Mercury Bobcat: 1978, 1979, 1980] - [Mercury Capri: 1980, 1981, 1982, 1983, 1984] - [Mercury Cougar: 1981, 1982, 1984, 1985, 1986] - [Mercury Marquis: 1983, 1984] - [Mercury Zephyr: 1978, 1979, 1980, 1981, 1982] - [Merkur XR4Ti: 1985, 1986, 1987, 1988, 1989]