Yamaha - Insert, cartridge - 6BX-44322-00-00Yamaha Cartridge Insert Water Pump Component 6BX 44322 00 00 Overview When youre servicing a water pump, this is one of those parts that makes a bigger difference than it looks. The cartridge insert works with the impeller and housing to keep water moving efficiently through the system. If its worn or scored, youll lose flow even if everything else is new. Ive seen cooling issues cleared up just by replacing this during a routine pump service. Key