This 1955-1956-1957-1958-1959-1960-1961-1962-1963-1964 Chevrolet 5.38 positraction rear end center section is an original used two-pinion type with cast arma-steel housing. The 10-bolt differential fits all passenger cars. We have inspected the ring and pinion so as to ensure minimal ware and tare on the differentials that we sell.
1955 - GM# ???
1956 - GM# 3707306
1957-1964 - GM# 3725899 (non/Pos)
1957-1961 - GM# 3743833 (Pos)
1962-1964 - GM# 3789812 (Pos)