OEM Quicksilver 8M0204712 Impeller for Mercury & Mariner 15–25hp
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Description
Description
The OEM Quicksilver 8M0204712 water pump impeller is specified for selected Mercury and Mariner 15–25hp outboards. Its flexible vanes supply cooling water through the matching pump.
Part identification
- Current manufacturer part number: 8M0204712.
- Supersedes 8508910, also written with the class prefix as 47-8508910.
- Replacement impeller only.
Match the engine serial number and water pump diagram before ordering. The part is also used in other specific OEM applications; the stated horsepower range is not a universal compatibility rule.
Use the applicable service manual for installation and inspect the pump’s other components during service.
Part-number history
| Sequence | Manufacturer part number |
|---|---|
| Earlier reference | 8508910 |
| Latest verified number | 8M0204712 |
Confirm the applicable engine or drive serial number and required package quantity.

