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The ACL crankshaft main bearing set superseded by 4M7278A-.75 is offered as a replacement main bearing kit and references ACL America in the source data. Use this set to replace main shells during an engine rebuild or repair where the supersession applies, restoring proper main clearances and crank support for the referenced application.
ACL SUPERCEDED BY 4M7278A-.75 - ACL AMERICA Engine Crankshaft Main Bearing Set
