Yamaha - Insert Cartridge - Water Pump Housing Insert - 61A-44322-00-00

Overview

Inside your water pump, this insert cartridge is what the impeller rides against every time the engine is running. Over time, it can wear down from constant rotation, heat, and debris, which starts to affect how efficiently water moves through the system. When that happens, you might not notice right away—until cooling performance drops off. Replacing it during a water pump service helps keep everything tight and flowing the way it should.

Key Features

• Impeller Contact Surface – Provides a smooth internal surface for the impeller to spin and move water efficiently.

• Supports Strong Water Flow – Helps maintain proper pressure and circulation through the cooling system.

• Wear-Resistant Construction – Built to handle constant friction, heat, and debris inside the pump housing.

• OEM Precision Fit – Designed to seat correctly within the water pump housing for proper alignment and sealing.

Engine & Boat Compatibility

Compatible with select Yamaha outboard engines. Always verify fitment using your engine model and specifications before installation.

FAQ

Q: What does the insert cartridge actually do?
A: It forms the inner surface of the water pump housing where the impeller spins to move water.

Q: When should I replace this part?
A: It’s typically replaced during a full water pump rebuild or if there’s visible wear or scoring.

Q: What happens if this part is worn out?
A: Water flow can decrease, leading to poor cooling and potential overheating issues.

Q: Can I reuse my old insert when replacing the impeller?
A: You can, but it’s not recommended if there’s any wear—it can reduce pump efficiency.

Q: Is this included in all water pump kits?
A: Not always, some kits include it while others require it to be purchased separately.