Mercury – Water Separating Fuel Filter | High-Efficiency Filtration | Marine-Grade Construction | 8M0154755

Overview

Any boater who’s spent time offshore knows how much trust we put into the heart of our engine’s fuel system. Clean fuel isn’t just a preference—it’s what keeps the day running smoothly. You feel it in the steady rumble at idle and the confident pull when you throttle up. With the Mercury Marine part number 8M0154755 Water Separating Fuel Filter, you’re giving your engine the kind of protection that lets you relax into the ride. It takes one worry off your mind so you can focus on the water ahead, not what’s happening in the fuel lines.

Key Features

• Ten-micron filtration delivering over ninety percent efficiency
• Removes water and fine contaminants before they reach internal engine components
• Universal head fit with a ninety-three millimeter height
• Simple installation and removal, designed for ease of service
• Direct replacement for a long list of filters, including AC-Delco TP1239, Crusader 22687, Fleetguard FF5059, Fram PS3808, Mallory Marine 9-37801, RACOR PFF5510, Sierra 18-7944 and more
• Built to meet the demands of modern marine engines

Engine & Boat Compatibility

This versatile filter fits a wide range of setups, including:

• Many inboard and sterndrive engines that require a standard marine water separating filter
• Engines originally equipped with AC-Delco, Crusader, Mallory Marine, Fram, Fleetguard, RACOR or Sierra equivalents
• Commonly used on runabouts, cruisers, fishing vessels, wake boats, pontoons and multi-engine offshore platforms
• Ideal for carbureted and fuel-injected systems depending on the exact engine model

Its broad compatibility makes it a dependable choice for mixed fleets or older engines still delivering strong performance.

Performance & Practical Benefits

What you’ll notice most with this filter is how consistent your engine feels. Clean, dry fuel translates to smooth acceleration, crisp throttle response and better overall engine behavior. The ten-micron element captures the tiny particles that cause wear, while the water-separating capability keeps moisture away from injectors, pumps and internal surfaces.

Water in fuel is one of the quickest ways to lose performance—and eventually damage expensive components. This filter works as a frontline defense, giving you a tight, reliable seal and steady flow you can trust. Changing it out each season or during major service takes only minutes, and the improvement in fuel quality is something you’ll feel right away.

Why Buy OEM

Choosing a Mercury OEM-grade filter means you’re choosing long-term reliability:

• Designed to meet Mercury’s original engineering standards
• More durable and consistent than many aftermarket alternatives
• Helps maintain stable fuel pressure and dependable filtration
• Protects essential engine components from premature wear
• Offers a cost-effective upgrade compared to repairing fuel-system damage

This is the kind of part seasoned boaters recommend because it simply works—and keeps working.

FAQ

Q1: Which engines does this filter fit?

It fits a wide range of marine engines that use standard water separating filters such as AC-Delco TP1239, RACOR PFF5510 or Sierra 18-7944.

Q2: How is it better than aftermarket filters?

The filtration efficiency and construction quality are noticeably stronger, offering better long-term protection.

Q3: How do I confirm it’s the correct replacement?

Match your current filter’s part number with the cross-references listed for this Mercury Marine part.

Q4: Can it handle both saltwater and freshwater boating?

Yes, it’s built with marine-grade materials designed for either environment.

Q5: Is installation simple for most boat owners?

Absolutely—removing the old filter and installing the new one is straightforward with basic tools.