Yamaha - Water Pump Cartridge Outer Plate - Cooling System Component - 61N-44323-00-00

Overview

The outer plate is a key component inside the water pump assembly, providing the surface the impeller rotates against during operation. Over time, this surface can wear down, which reduces water pressure and overall cooling efficiency. This Yamaha cartridge outer plate is designed to restore a smooth contact surface, helping maintain proper water flow and consistent engine cooling. Replacing it during water pump service helps prevent overheating and keeps your outboard running reliably.

Key Features

• Impeller Contact Surface – Provides a smooth surface for proper impeller rotation.
• Maintains Cooling Efficiency – Helps ensure consistent water flow through the engine.
• OEM Yamaha Fitment – Genuine part built to factory specifications for precise installation.
• Wear-Resistant Design – Designed to handle continuous impeller movement and water flow.

Engine & Boat Compatibility

• Compatible with select Yamaha outboards that utilize this outer plate (confirm fitment by model and year)

FAQ

Q: What happens if the outer plate is worn?
A: It can reduce water pressure and lead to overheating, especially at low speeds.

Q: Should I replace this during a water pump rebuild?
A: Yes, especially if there are grooves or visible wear.

Q: Can I reuse the old plate?
A: It’s possible, but even minor wear can reduce cooling efficiency.

Q: Does this affect impeller lifespan?
A: Yes, a worn plate can shorten impeller life and reduce performance