ACL crankshaft main bearing set for Nissan six-cylinder 3956cc engines, listed with P/P40/PF references and covering 1960–1990 applications. This main bearing set supplies replacement shells sized for the crankshaft mains used in those Nissan engines and is intended for engine rebuilds or maintenance to restore correct main clearances and consistent crank support during operation.

ACL Nissan 6 3956cc P/P40/PF 1960-90 Engine Crankshaft Main Bearing Set