Yamaha - Insert cartridge - 689-W4432-01-00 MerCruiser-3-0L-MPI-2007 Commonly used where fasteners are

Commonly used where fasteners are prone to vibration-related loosening

while the composite parts keep the assembly lightweight and reliable

providing strength

6BT-50070-47-00 - 36X9 TM DA TPA NO UP FIN

Yamaha - Insert cartridge - 689-W4432-01-00 MerCruiser-3-0L-MPI-2007 Commonly used where fasteners areYamaha Water Pump Cartridge Insert Cooling System Component 689 W4432 01 00 Overview When youre rebuilding a water pump, the cartridge insert is one of those pieces you dont overlook. Its what helps guide water flow through the pump housing and keeps everything moving the way it should. If its worn or scored, youll lose efficiency even with a new impeller. Swapping it out during service keeps your cooling system working like its supposed to. Key