NEW CIRCULATING WATER PUMP FOR MERCRUISER, OMC, VOLVO PENTA 4.3 5.0 5.7 305 350 V6 V8 ENGINES NEW, not remanufactured. Includes gaskets This new design water pump is bi-directional and fits both metal and composite timing chain covers. Stinless steel backing plate Assembled in the USA For Mercruiser, OMC, Volvo Penta 4.3, 5.0, 5.7 GM (Chevy) based engines