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ACL crankshaft main bearing set for Mazda six-cylinder engines (YA/XB/ZB) covering 3784–4052cc, 1969–1988. This complete main bearing kit replaces worn crank bearings to restore proper clearances during overhauls or repairs, helping maintain oil-film lubrication and steady crankshaft rotation. Supplied for direct-replacement in the specified Mazda engine family, it’s intended for rebuilds, maintenance, and service work.
ACL Mazda 6 3784-4052cc YA/XB/ZB 1969-88 Engine Crankshaft Main Bearing Set
