The EMP 47-47271 water pump impeller is designed for select vintage Mercury outboard motors using the 47-20813 or 47-25287 style water pump impeller. This 6-blade impeller features a keyed hub and is used on a range of early Mercury engines including select 10, 16, 20, 22, 30, and 40 HP applications.
Fitment
- Mercury 10 HP: serial numbers 500022-1057993
- Mercury 16 HP: serial number 700000 & up within the applicable early-engine family
- Mercury 20 HP: serial numbers 860970-1292909
- Mercury 22 HP: serial numbers 1158546-1238089
- Mercury 30 HP: serial numbers 950250-1260724
- Mercury 40 HP: serial numbers 941751-1224480
- Select Mark 15, Mark 20, Mark 25, Mark 25E, Mark 30 and Mark 30E models
- Select KH7 and WG7 models using the later 47-20813 style water pump
Impeller Specifications:
- 6 blades
- Keyed hub
- Approximately 38.5 mm outside diameter
- Approximately 21.8 mm width
- Approximately 16 mm inside diameter
Replaces / Cross-References
- Mercury 47-20813
- Mercury 20813
- Mercury 47-25287
- Mercury 25287
- Sierra 18-3008
Fitment Note: These are vintage Mercury applications and fitment should be verified by engine model, serial number, and original impeller number before ordering. Some early KH7 engines were originally equipped with a different water pump and must have the later 47-20813-style pump conversion for this impeller to fit.
Questions About This Product?
Have a question about this part or need help determining if it may work for your application? Email us at customerservice@marinepartswarehouse.com with your engine model and serial number, and our team will be happy to help with any information we have available.
