Sierra 18-3062 Impeller Mercury 6HP Force 9.9-15HP 47-42038Q02
18-3062
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Sierra 18-3062 Water Pump Impeller
For selected Mercury and Force two-stroke outboards
The Sierra 18-3062 is a flexible-vane water pump impeller for compatible Mercury and Force two-stroke outboards. It replaces the listed Mercury references and is intended for routine cooling-system maintenance.
Key Features
- ✔ Genuine Sierra-branded replacement impeller
- ✔ Flexible rubber-vane design
- ✔ For selected two-cylinder two-stroke outboards
- ✔ Cross-references several Mercury 47-42038 numbers
- ✔ Supplied as one impeller
Technical Specs
| Brand | Sierra |
| Sierra part number | 18-3062 |
| Part type | Water pump impeller |
| Engine type | Selected two-cylinder two-stroke |
| Quantity | 1 impeller |
| Kit components | Impeller only |
Compatibility / Fitment Guide
Listed for selected Mercury 6HP two-cylinder two-stroke outboards from approximately 1986–2006, plus selected Chrysler/Force and Sears 9.9HP and 15HP two-cylinder models, including specified 1998 applications. Verify the pump and serial range before purchase.
Part Number Cross Reference
| Sierra | 18-3062 |
| Mercury | 47-420381; 47-42038-2; 47-42038-4; 47-42038Q02 |
This is a genuine Sierra aftermarket impeller, not a Mercury or Force-branded component.
Questions & Answers
Is this a complete water pump kit?
No. This listing is for the impeller only.
Will it fit every Mercury 6HP?
No. Match the original impeller reference and engine serial number.
Is it a genuine Mercury part?
No. It is a genuine Sierra replacement.
When should the impeller be replaced?
Follow the service interval in the engine manual and replace it sooner if cooling flow is reduced or the pump has run dry.
Note: Check the key, wear plate, housing and gaskets during service; replace damaged parts before reassembly.
For the products under £150 the shipping is £6.99.
Free delivery for most items over £150.
