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The ACL crankshaft main bearing set superseded by part 4M7278A-.50 from ACL America is supplied as a complete main bearing kit for engine rebuilds. It provides the matched shells necessary to restore crankshaft support and correct clearances during reassembly, helping reduce wear and return the rotating assembly to reliable service for the engines covered by the superseded reference.
ACL SUPERCEDED BY 4M7278A-.50 - ACL AMERICA Engine Crankshaft Main Bearing Set
