Yamaha - Outer Plate, cartridge - Cooling System Component - 682-44323-40-00

Overview

This is one of those small parts in the water pump setup that can cause bigger issues if it’s not in good shape. The outer plate helps guide and seal water flow through the cartridge, keeping everything moving the way it should. I’ve seen worn plates lead to weak water pressure and inconsistent cooling. When it’s solid and properly seated, the whole system works smoother and keeps the engine running at the right temperature.

Key Features

• Water Flow Support – Helps guide cooling water through the pump system efficiently.
• Genuine Yamaha Fitment – Designed to match factory cartridge and housing components.
• Sealing Surface Stability – Supports proper sealing to maintain consistent water pressure.
• Cooling System Efficiency – Helps ensure steady water circulation through the engine.
• Durable Marine Construction – Built to handle constant water exposure and engine vibration.

Engine & Boat Compatibility

Compatible with select Yamaha outboards using this outer plate. Verify fitment based on your specific engine model.

FAQ

Q: What happens if this outer plate is worn or damaged?
A: It can reduce water flow efficiency and lead to cooling issues.

Q: Is this part part of the water pump system?
A: Yes, it works with the cartridge and impeller to guide water flow.

Q: Can this affect engine temperature?
A: Yes, improper water flow can lead to overheating over time.

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

Q: Does saltwater use impact this part?
A: Over time, corrosion and buildup can affect performance if not maintained.