Yamaha - Housing, water pump - 6BG-44341-00-00Yamaha Water Pump Housing Cooling System Component 6BG 44341 00 00 Overview When cooling issues show up, the housing is just as important as the impeller itself. This is what holds the pump components in place and directs water through the system properly. If its worn or scored inside, you can lose flow even with a brand new impeller. Ive seen overheating problems stick around until the housing was replaced. Key Features Controlled Water Flow Path