The Jabsco MerCruiser type replacement pump has a one piece bronze body and bronze end-plate unlike the aluminum, plastic and cast iron composite pump supplied as original equipment. It has a replaceable cam and wearplate so it can be totally overhauled. The long-life impeller fits both the stock MerCruiser pump and Jabsco aftermarket pump and is supplied with the gaskets needed to complete the impeller replacement. The pump has the option of left or right hand rotation.