Replacing your 1986-1992 4.3L
GM direct replacement engine for the older 1986-1992 Mercruiser, OMC, and Volvo. It can be easily identified by the 12 bolt pattern intake manifold. This is a non-Vortec engine, non-balance shaft design,, fuel pump pad, and 1 piece rear main seal. The long block engines no intake, flywheel, balancer, or water pump.