The ACL main bearing set, part 5M909P, is supplied with a +0.020 in oversize flange for crankshaft journal applications that require an undersize/oversize correction. It provides replacement main shells used during engine rebuilds to restore journal support. Use this part when a +0.020 in oversize main bearing is specified to achieve correct clearance and reliable crankshaft operation.

ACL 5M909P + .020 O/W FLANGE Engine Crankshaft Main Bearing Set