Yamaha - Outer Plate, Cartridge - Water Pump Component - 6CJ-44323-00-00

Overview

When you’re rebuilding a Yamaha water pump, the outer plate is one of those pieces that keeps everything working together the way it should. It helps maintain the proper structure and sealing inside the pump, which directly affects water flow. I’ve seen cooling issues come from worn plates that didn’t look bad at first glance. When it’s in good shape, the whole pump runs smoother and keeps the engine cool without any issues.

Key Features

• Structural Pump Support – Helps maintain proper alignment within the water pump assembly.
• Smooth Surface Contact – Provides a consistent surface for internal components to operate efficiently.
• Durable Plate Construction – Built to handle friction, pressure, and continuous water movement.
• Reliable Cooling System Function – Supports steady water flow for proper engine temperature control.
• Factory-Spec Fitment – Designed to match Yamaha water pump systems for accurate installation.

Engine & Boat Compatibility

Designed for Yamaha outboard engines utilizing a cartridge-style water pump system. Suitable for a range of mid to high horsepower applications across recreational and working marine setups.

FAQ

Q: What happens if this outer plate is worn?
A: It can reduce pump efficiency and lead to poor water flow or overheating.

Q: Should I replace this during a water pump service?
A: It’s a good idea to inspect it and replace it if there’s any scoring or wear.

Q: Can this part affect the impeller?
A: Yes, a worn surface can cause uneven wear on the impeller and reduce performance.

Q: Is installation difficult?
A: It’s typically straightforward during a pump rebuild, but proper alignment is important.

Q: Does saltwater use impact this component?
A: Over time, corrosion can develop if the system isn’t flushed regularly.