ACL crankshaft main bearing set for Pontiac four-cylinder 151 engines (1977–1993) and Chevrolet four-cylinder 153ci engines (1962–1970) as listed. These main bearings are intended for engine rebuilds and repairs that require restoring proper crankshaft support and oil clearances in the cataloged engine families.

ACL Pont. 4 151 1977-93 Chev 4 153ci 1962-70 Engine Crankshaft Main Bearing Set