(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