Yamaha - Water Pump Body Assembly | Cooling System Component | YF1-43847-34-00

Overview

When you’re rebuilding a Yamaha water pump, the body is what everything depends on lining up right. I’ve seen pumps struggle just because the housing was worn or scored, even with a new impeller installed. The Yamaha Water Pump Body Assembly YF1-43847-34-00 gives you that solid foundation so water moves clean and efficiently through the system. It’s one of those parts that keeps the whole cooling setup working the way it should.

Key Features

• Primary Pump Housing Structure – Provides the main chamber for proper water circulation.

• Yamaha Engineered Fit – Built to factory specifications for accurate alignment and sealing.

• Durable Marine Construction – Designed to withstand water exposure, heat, and engine vibration.

• Supports Efficient Cooling Flow – Helps maintain consistent water movement through the engine.

• Direct Replacement Assembly – Installs in place of the original housing during pump service.

Engine & Boat Compatibility

The Yamaha Water Pump Body Assembly YF1-43847-34-00 is designed for Yamaha engines equipped with water pump cooling systems.

It is commonly used in Yamaha marine and recreational engines where maintaining proper pump housing integrity is essential for reliable cooling performance. Always confirm compatibility using your engine model and parts diagram before installation.

FAQ

Q: What happens if the water pump body is worn or damaged?
A: It can reduce pump efficiency and lead to poor cooling or overheating.

Q: Should this be replaced during impeller service?
A: It’s not always required, but it should be inspected for scoring or wear.

Q: Can a worn housing affect water pressure?
A: Yes, it can reduce the pump’s ability to move water effectively.

Q: Is installation difficult?
A: It depends on access, but proper alignment and sealing are important.

Q: Should I replace other pump components at the same time?
A: Yes, it’s a good idea to inspect or replace the impeller, seals, and cover together.