This direct replacement drum brake wheel cylinder was specifically engineered to match the fit, function and performance of the original wheel cylinder on particular vehicles. It is manufactured and tested for quality assurance. This part is compatible with the following vehicles. Before purchasing, enter your vehicle trim in the garage tool to confirm fitment. [Checker A9: 1959, 1960, 1961, 1962, 1963] - [Checker A9L: 1959, 1960, 1961, 1962, 1963] - [Checker Aerobus: 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967] - [Checker Marathon: 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969] - [Checker Superba: 1960, 1961, 1962, 1963] - [Checker Taxicab: 1959, 1960, 1961, 1962, 1963, 1964] - [International Scout: 1962, 1963, 1964, 1965, 1966, 1967] - [Packard Hawk: 1958] - [Packard Packard: 1958] - [Studebaker 3E12: 1958] - [Studebaker 3E7: 1958] - [Studebaker 4E1: 1959] - [Studebaker 4E11: 1959] - [Studebaker 4E12: 1959] - [Studebaker 4E2: 1959] - [Studebaker 4E3: 1959] - [Studebaker 4E7: 1959] - [Studebaker 6E10: 1961] - [Studebaker 6E12: 1961] - [Studebaker 6E5: 1960, 1961] - [Studebaker 6E7: 1961] - [Studebaker 7E10: 1962] - [Studebaker 7E12: 1962] - [Studebaker 7E5: 1962] - [Studebaker 7E7: 1962] - [Studebaker 8E10: 1963, 1964] - [Studebaker 8E12: 1963, 1964] - [Studebaker 8E5: 1963, 1964] - [Studebaker 8E7: 1963, 1964]