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The ACL .40mm oversized main bearing set is specified for Ford production V8 engines (255, 289, 302) from 1962–1998 where crank journals require a 0.40mm undersize correction. Use this bearing set when machining specifications call for that oversize to re-establish proper clearances and bearing support. It helps ensure dependable crankshaft operation in rebuilt engines after larger journal reductions.
ACL 1962-1998 Ford Prod V8 255/289/302 .40mm Oversized Main Bearing Set
