Description
Quicksilver 8M0205803 Water Pump Repair Kit
The Quicksilver 8M0205803 water pump repair kit is a genuine Quicksilver kit for select Mercury 175-300 HP and 450R 3.4L V6 and 4.6L V8 FourStroke outboards, serial number 2B529482 and above, where this part number is specified. Confirm fitment by serial number, parts diagram, owner’s manual, or service manual before ordering.
Key Features
- Genuine Quicksilver water pump repair kit
- For use on Mercury 175-300 HP and 450R 3.4L V6 and 4.6L V8 FourStroke outboards where specified
- Produced to meet Mercury Marine original equipment manufacturer specifications
- Impeller elastomers provide improved flexibility across temperature ranges
- Complete service kit for compatible 4-stroke outboard water pumps
Fitment / Product Details
- Brand: Quicksilver
- Part number: 8M0205803
- Product type: water pump repair kit
- Fits Mercury 3.4L V6 175-225 HP FourStroke outboards where specified
- Fits Mercury 4.6L V8 200-300 HP FourStroke outboards where specified
- Fits Mercury 450R outboards where specified
- Serial range: 2B529482 and above
- Engine range: 175-450 HP where specified
- Supersedes/replaces: 8M0142980
What’s Included
- Water pump impeller
- Impeller key
- Face plate
- Face plate gasket
- Water pump gaskets
- Face seal
- Drain plug seal
- O-ring
- Actuator seal
- Face seal tool
Why You Should Buy
- OEM-style Quicksilver kit for cooling-system maintenance
- Helps restore proper water pump flow and cooling performance
- Complete kit format helps reduce missing parts during service
- Best selected by exact part number and engine serial-number lookup
Common Applications
- Mercury 175-300 HP V6/V8 FourStroke water pump service
- Mercury 450R outboard water pump service
- Applications requiring Quicksilver 8M0205803
- Replacement for applications previously using 8M0142980 where specified
FAQ
- Is this a genuine Quicksilver part? Yes. This listing is for a genuine Quicksilver water pump repair kit.
- What engines does this kit fit? It fits specified Mercury 175-300 HP and 450R 3.4L V6 and 4.6L V8 FourStroke outboards with serial number 2B529482 and above.
- Does this replace 8M0142980? Yes, supplied data lists 8M0142980 as a superseded part number.
- Does this fit every Mercury 175-450 HP outboard? No. Fitment depends on model, serial number, and parts diagram.
- Need help confirming fitment? Contact us before ordering and our parts team can help verify compatibility: Ask a Parts Pro.