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ACL crankshaft main bearing set that provides essential journal support during engine rebuilds and repairs. It restores correct bearing clearance and helps maintain oil film under load for smoother crankshaft rotation. This part is listed to be superseded by 4M2037A when current stock is exhausted, so verify the replacement number if ordering for future service.
ACL To be superceded by 4M2037A when stock exhausted. Engine Crankshaft Main Bearing Set
