Mercury - Quicksilver Sea Water Pump Body Kit For MerCruiser Engines with 1-Piece Engine-Mounted Pumps 807151A14. Overview. Your cooling system is only as good as its water pump, and the Mercury Marine 807151A14 Quicksilver Sea Water Pump Body Kit is designed to keep it performing like new. Built for MerCruiser engines with a 1-piece engine-mounted sea water pump, this kit replaces the entire pump body assembly, restoring full cooling efficiency and dependable operation. Made from a strong two-s