This is a new old stock auto part. This is a power braker booster rebuild unit fits bendix boosters on box says bendix type major ..... ESI part # 5977797 repklaces international # 877797
listed as fitting
- international truck 1949 1950 1951 1952 1953 1954 1955
- mack truck 1950 1951 1952 1953 1954 1955
