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ACL crankshaft main bearing set for engine rebuilds that restores proper journal support and bearing clearance. It helps maintain oil film and smooth crankshaft rotation after replacing worn mains. This part is slated to be superseded by 4M2037A once existing stock is exhausted, so confirm the active part number when purchasing.
ACL To be superceded by 4M2037A when stock exhausted. Engine Crankshaft Main Bearing Set
