Mercruiser Chevy 3.0 181 Marine 140hp MASTER Engine Kit pistons gaskets cam 2PC (std) Chevrolet/GM 3.0L (181ci) 4-cylinder engines with a 2-piece rear seal. Cast Piston Ring Set Rod Bearing Set Marine Engine Gasket Set Main Bearing Set Cam Bearing Set Timing Gear Set (w/ aluminum cam gear) Oil Pump Hypereutectic Dish Top Piston Set (4) - flat top pistons available upon request-customer must specify BRASS Expansion/Freeze Plug Kit NEW Camshaft Valve Lifter Set