Yamaha - Cartridge Outer Plate - Cooling System Component - 6L2-44323-00-00

Overview

When you’re rebuilding a water pump, it’s not just about the impeller—the surrounding components matter just as much. This outer plate plays a key role in keeping everything aligned and sealed inside the pump housing. I’ve seen setups where skipping this part led to weak water flow even with a new impeller installed. Keeping it fresh ensures the pump does its job and the engine stays properly cooled.

Key Features

• Supports Pump Alignment – Keeps internal water pump components properly positioned.
• Maintains Seal Integrity – Helps prevent water leakage and loss of pressure.
• Durable Construction – Built to handle constant water exposure and wear.
• Factory-Spec Fitment – Designed to match Yamaha cooling system components for proper installation.
• Essential for Pump Service – Commonly replaced during water pump rebuilds or maintenance.

Engine & Boat Compatibility

Designed for Yamaha outboard engines with compatible water pump systems. Commonly used across small to mid-range outboards on fishing boats, skiffs, and utility vessels. Always confirm part number compatibility before installation.

FAQ

Q: What happens if this outer plate is worn?
A: It can reduce water pump efficiency and affect cooling performance.

Q: Should I replace this during an impeller change?
A: It’s a good idea to inspect it and replace it if there’s wear or damage.

Q: Can this cause overheating issues?
A: Yes, poor sealing or alignment can reduce water flow and lead to overheating.

Q: Is installation difficult?
A: It’s straightforward during a water pump service, just ensure proper positioning.

Q: Does saltwater use affect this part?
A: Over time, yes—regular inspection helps maintain reliable performance.