The Yamaha impeller F8B / F9.9A–D is a genuine impeller for the outboard's water pump.
The impeller circulates cooling water through the engine. The rubber vanes harden, crack or deform over time, which reduces cooling water flow and can lead to engine overheating. Inspect the impeller at the service interval and replace it when worn or damaged.
Compatible models:
- F8B
- F9.9A
- F9.9B
- F9.9C
- F9.9D
- several Yamaha 8–15 hp models with a compatible water pump
Part numbers and references:
- Yamaha OEM number: 682443520300
- Yamaha reference: 682-44352-03
Please check fitment against your engine model and model year before ordering. Genuine Yamaha part.