Yamaha - Insert cartridge - 689-W4432-01-00 MerCruiser-3-0L-MPI-2007 6HK-45300-03-NA - LOWER UNIT ASSY

6HK-45300-03-NA - LOWER UNIT ASSY

it guarantees exceptional durability and long-lasting reliability

but it plays a big role in protecting engine performance

Fuel pumps are one of those parts you don’t think about until the engine starts acting up

Yamaha - Insert cartridge - 689-W4432-01-00 MerCruiser-3-0L-MPI-2007 6HK-45300-03-NA - LOWER UNIT ASSYYamaha 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