The ACL main bearing set is a crankshaft main bearing kit that supplies the bearings required when replacing worn mains to preserve crankshaft support and smooth rotation. It suits routine engine rebuilds and scheduled maintenance. This specific set fits AMC/Jeep 4‑150 applications for 1983–1990 models.

ACL AMC Jeep 4 150 1983-90 Engine Crankshaft Main Bearing Set