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. This part is compatible with the following vehicles. Before purchasing, enter your vehicle trim in the garage tool to confirm fitment. [Ford Country Sedan: 1961, 1965, 1966, 1967] - [Ford Country Squire: 1965, 1966, 1967] - [Ford Custom 500: 1965, 1966, 1967] - [Ford Custom: 1965, 1966, 1967] - [Ford Fairlane: 1961, 1962, 1963, 1964, 1965, 1966, 1967] - [Ford Galaxie 500: 1965, 1966, 1967] - [Ford LTD: 1965, 1966] - [Ford Mustang: 1967] - [Ford Ranch Wagon: 1961, 1963, 1964, 1965, 1966] - [Ford Thunderbird: 1965, 1966, 1967] - [Mercury Brougham: 1967] - [Mercury Colony Park: 1962, 1963, 1964, 1965, 1966, 1967] - [Mercury Commuter: 1965, 1966, 1967] - [Mercury Cyclone: 1966, 1967] - [Mercury Montclair: 1965, 1966] - [Mercury Monterey: 1962, 1963, 1964, 1965, 1966, 1967] - [Mercury Park Lane: 1965, 1966] - [Mercury Villager: 1965, 1966, 1967]