The Yamaha impeller F4A–5C 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:
2-stroke:
- 4AC – 1985–2003
- 4BC – 2003
- 4AS – 1988–1996
- 5C – 1985–
- 5CS – 1988–1996
- Mariner 4A
- Mariner 5C
Part numbers and references:
- Yamaha OEM number: 6E0443520000
- Yamaha reference: 6E0-44352-00
Please check fitment against your engine model and model year before ordering. Genuine Yamaha part.