Mercury - Quicksilver 817275A6 Water Pump Rebuild Kit Mercury 3.0L DFI Outboards 817275A6. Overview. A reliable cooling system keeps your outboard running at its best. The Quicksilver 817275A6 Water Pump Rebuild Kit restores factory-level cooling performance for Mercury 3.0L DFI outboards, giving your engine the consistent water flow it needs to stay cool under load.. This all-in-one kit includes everything you need - an impeller, housing, faceplate, seals, and gaskets - all built to Mercury Mar