Yamaha - Impeller Housing 2 Water Pump Component 60E-51317-00-00. Overview. When you're rebuilding a Yamaha water pump, every piece in that stack matters, not just the impeller. I've run into setups where the secondary housing was worn just enough to affect water flow, even with a new impeller installed. The Yamaha Impeller Housing 2 60E-51317-00-00 helps complete that system so everything lines up and seals the way it should. It's one of those parts that keeps the cooling system working properl