Description
Quicksilver 8M0204712 Water Pump Impeller 15-50HP
The Quicksilver 8M0204712 Water Pump Impeller is a replacement cooling system impeller for select Mercury and Mariner outboards. Also referenced as Mercury 47-8M0204712, this impeller is used in compatible water pump assemblies to help maintain proper cooling water flow during engine operation.
Key Features
- Quicksilver water pump impeller replacement
- Part number: 8M0204712
- Mercury part reference: 47-8M0204712
- Fits select Mercury and Mariner 15HP to 50HP outboard applications
- Used on select FourStroke, EFI FourStroke, carbureted FourStroke, and 2-stroke applications where specified
- Supports proper cooling water flow through the outboard engine
- Ideal for routine water pump service and seasonal cooling system maintenance
- Related repair kits include 821354A2 and 821354A04 for select applications
Fitment / Product Details
- Brand: Quicksilver
- Part Number: 8M0204712
- Mercury Part Reference: 47-8M0204712
- Product Type: Water pump impeller
- Application: Select Mercury and Mariner outboard water pump applications
- Engine Types: Select 2-stroke, FourStroke, carbureted FourStroke, EFI FourStroke, BigFoot, and short shaft outboard applications where specified
- HP Range: Select 15HP to 50HP applications
- Assembly Location: Water pump / cooling system assembly
- Related Impeller Repair Kits: 821354A2, 821354A04
- Related Upper Housings: 46-99157A02, 46-821351A3 where specified
- Supersedes / Replaces: 47-85089-10
- Additional Cross-Reference Numbers: 47-85089, 47-850891, 47-508920, 47-850893, 47-8508910, 47-8M0024502, 47-8M0027792
- Fitment Note: This impeller does not fit every 9.9HP to 50HP Mercury or Mariner outboard. Match part number 8M0204712 or 47-8M0204712 to your engine model, serial number, shaft style, gearcase type, and water pump chart before ordering.
Expanded Fitment Chart
| Model | Model Notes | Serial Range | Impeller | Related Impeller Repair Kit | Related Upper Housing |
|---|---|---|---|---|---|
| 15 FourStroke | 323cc, BigFoot | USA 0G590000-1B727495; BEL 9973100 & Up | 47-8M0204712 | N/A | 46-99157A02 |
| 25 FourStroke Carb | Carbureted FourStroke | USA 0G590000-0T408999; BEL 9973100-0P153499 | 47-8M0204712 | 821354A2 | 46-821351A3 |
| 25 FourStroke Carb | Carbureted FourStroke | USA 0T409000-1B344298; BEL 0P153500-0P388282 | 47-8M0204712 | 821354A04 | 46-821351A3 |
| 30 FourStroke Carb | Standard gearcase | USA 0G760300-0T408999 | 47-8M0204712 | 821354A2 | 46-821351A3 |
| 30 FourStroke Carb | Standard gearcase | USA 0T409000 & Up; BEL 0P153500 & Up | 47-8M0204712 | 821354A04 | 46-821351A3 |
| 30 FourStroke EFI | EFI FourStroke | USA 0T409000-1B226999 | 47-8M0204712 | 821354A04 | 46-821351A3 |
| 40 FourStroke Carb | 3-cylinder, standard gearcase | USA 0G760300-0T408999 | 47-8M0204712 | 821354A2 | 46-821351A3 |
| 40 FourStroke EFI | 3-cylinder, short shaft | CHN 1C000001-1C049738 | 47-8M0204712 | 821354A04 | 46-821351A3 |
| 25 / 30 / 40 / 45 / 50 Outboards | Select 2-stroke and 4-stroke applications using repair kit 821354A2 | Confirm by model and serial number | 47-8M0204712 where specified | 821354A2 | Confirm by parts diagram |
Why You Should Buy
- Correct Quicksilver impeller for applications requiring 8M0204712 or 47-8M0204712
- Fits select Mercury and Mariner 15HP to 50HP outboard water pump applications
- Helps maintain proper cooling water flow through compatible outboard engines
- Useful for scheduled water pump service, seasonal maintenance, and preventative cooling system repair
- Supports accurate replacement when matched by part number, engine model, serial number, and water pump chart
Common Applications
- Mercury 15HP FourStroke BigFoot water pump service
- Mercury 25HP FourStroke carbureted water pump service
- Mercury 30HP FourStroke carbureted and EFI water pump service
- Mercury 40HP FourStroke carbureted and EFI water pump service
- Select Mercury and Mariner 25HP, 30HP, 40HP, 45HP, and 50HP 2-stroke and 4-stroke outboards where 47-8M0204712 is specified
- Cooling system maintenance using Quicksilver 8M0204712
FAQ
- What is Quicksilver 8M0204712? Quicksilver 8M0204712 is a water pump impeller for select Mercury and Mariner outboards.
- What is the Mercury part reference? This impeller is also referenced as Mercury 47-8M0204712.
- What horsepower range does this impeller fit? This impeller fits select 15HP to 50HP Mercury and Mariner outboard applications where 8M0204712 or 47-8M0204712 is specified.
- Does this fit all 9.9HP to 50HP outboards? No. This part should not be listed as a universal 9.9HP to 50HP impeller. It fits select applications by model, serial range, shaft style, and gearcase type.
- Does this fit 40 FourStroke EFI short shaft models? Yes. It fits select 40 FourStroke EFI 3-cylinder short shaft models with CHN serial range 1C000001-1C049738 where 47-8M0204712 is specified.
- What related repair kits use this impeller? Related repair kits include 821354A2 and 821354A04 for select applications.
- What does the water pump impeller do? The impeller moves cooling water through the outboard engine to help maintain proper operating temperature.
- What part numbers does this replace? This impeller replaces 47-85089-10 and cross-references with 47-85089, 47-850891, 47-508920, 47-850893, 47-8508910, 47-8M0024502, and 47-8M0027792.
- How should I confirm fitment? Match part number 8M0204712 or 47-8M0204712 to your engine model, serial number, shaft length, gearcase type, owner’s manual, service manual, or water pump parts chart before ordering.