The ACL connecting rod bearing set is a replacement kit for Mazda four-cylinder diesel engines in the 2977–3455cc range. It provides matched shells for all connecting rods to restore bearing clearance and maintain smooth crankshaft operation during rebuilds or servicing. This set aligns with Mazda diesel applications spanning 1977–1990.

ACL Mazda 4 2977-3455cc Diesel 1977-90 Engine Connecting Rod Bearing Set