Description
Mercury 8M0236725 — Quick Connect Flushing System for 5.7L V10 350–425 HP FourStroke
This genuine Mercury quick-connect flushing system (8M0236725) lets you hook up a garden hose in seconds—no tools required. The cowl-mounted flush inlet and protective cover provide clean looks and easy access, helping you rinse salt, silt, and debris from internal passages after every run.
Applications
For Mercury 5.7L V10 FourStroke outboards in the 350–425 HP range. Always confirm compatibility by engine model and serial number before installation.
Shipping & Returns
Fast processing and shipping from our marine parts warehouse. 30-day returns on unopened, unused items. Review our Refund Policy for full details.
Key Facts
- BU Part ID: 8M0236725
- Type: Quick-connect engine flushing kit
- Compatibility: 5.7L V10 FourStroke 350–425 HP
- Purpose: Flush corrosive water and debris via a cowl-mounted inlet
- Brand: Mercury OEM
What’s Included
- 1 × Cowl-mounted flush fitting
- 1 × Quick-connect hose fitting
- 1 × Protective inlet cover
- 1 × Oetiker clamp
- 1 × O-ring
- 1 × Installation instructions
Service Notes
- Install per the engine service manual; verify hose routing and clamp placement.
- After saltwater use, connect a freshwater hose and flush for the duration specified by Mercury.
- Inspect the cover and O-ring periodically; replace if worn to maintain a watertight seal.



