(Supersedes from 8M0158586)

Reliable fuel delivery is one of those things you don’t think about—until the engine starts acting up. The Mercury Marine Fuel Supply Module - 8M0235171 is built to keep that side of the system dialed in, handling fuel pressure, filtration, and delivery within a single, integrated assembly. It helps ensure the engine is getting clean, properly pressurized fuel exactly when it needs it, whether you’re idling through a no-wake zone or pushing hard on plane.

Designed for select Mercury outboards, this module installs with factory-style connections that line up the way they should, keeping installation straightforward. Internally, it’s set up to maintain consistent fuel flow across the RPM range, reducing the chances of hesitation or fuel starvation under load. The materials are chosen for real-world marine use as well—resistant to corrosion from saltwater exposure and built to handle today’s ethanol-blended fuels without breaking down early.

What makes this module essential:

• Direct OEM fit for select Mercury outboards — installs cleanly with factory-style connections
  
• Combines fuel pressure regulation, filtration, and fuel delivery into one unit
  
• Corrosion-resistant construction designed for saltwater environments
  
• Supports smooth, consistent fuel flow from idle to wide-open throttle

Ideal for:

1. Replacing a failing or restricted fuel supply module to restore proper engine performance
   
2. Maintaining stable fuel pressure and clean fuel delivery in harsh or mixed-use conditions
   
3. Simplifying fuel system service by consolidating key components into one assembly

When the fuel system is doing its job, everything else falls into place. This module keeps fuel delivery steady and predictable, so your Mercury outboard runs the way it should—smooth, responsive, and reliable.