Mercury – Inline Fuel Filter | Fuel Protection Series | Translucent Polymer | 8M0157133

Overview

If you’ve spent any amount of time running a small outboard, you learn quickly that clean fuel isn’t something to take for granted. These little engines work hard, and they’ll treat you right as long as you give them a steady, contaminant-free fuel supply. That’s why Mercury Marine part 8M0157133 matters more than it looks. It’s one of those simple, dependable parts that gives you confidence every time you tilt the motor down and pull the cord or turn the key. Whether you’re easing across a quiet lake or running out to check crab traps on a breezy morning, knowing your fuel is clean brings a calm, steady peace of mind.

Key Features

• Inline fuel filter designed for under-cowl installation
• Translucent polymer housing lets you visually inspect fuel and debris
• Helps block harmful contaminants that cause hesitation or poor running
• Engineered to Mercury Marine original equipment standards
• Lightweight, compact design for tight engine compartments

Engine & Boat Compatibility

• Fits 1999 and newer Mercury and Mariner 4–5 horsepower two-stroke outboards
• Fits 1999 and newer Mercury and Mariner 4–6 horsepower four-stroke outboards
• Fits 2005 and newer Mercury and Mariner 8 and 9.9 horsepower four-stroke outboards
• Fits 2008 and newer Mercury and Mariner 15–20 horsepower four-stroke outboards
• Ideal for dinghies, tenders, jon boats, portable rigs, small fishing boats, and utility craft

Performance & Practical Benefits

What you notice first is the simplicity. This filter installs cleanly under the cowling, tucking into place without adding clutter. Once it’s in, the difference shows up not in what you see, but in what you don’t feel — no stumbles at idle, no sputtering when you crack the throttle, no guessing whether debris is sneaking into the carburetor or fuel system.

The translucent housing is one of those small but incredibly useful touches. A quick glance tells you everything you need to know: Is the fuel clean? Is debris starting to build up? Do you need to drain water or replace the filter? Instead of waiting for the engine to tell you something’s wrong, you stay ahead of it. It’s a simple, hands-on way to keep your outboard running strong.

This filter is built for real-world abuse — bouncing around in chop, long hours trolling, being tilted in and out of the water, even living through months of storage. With clean, steady flow, your outboard idles smoother, accelerates more confidently, and holds its rhythm even when conditions get a little sloppy. For boaters who rely on small engines daily, that sense of steadiness is worth a lot.

Why Buy OEM

You can find cheap filters all over the place, but few are truly made for the demands of marine fuel systems. A genuine Mercury Marine part is engineered specifically for the pressure, vibration, flow, and mounting conditions these outboards run in. It seals right, fits right, and filters the way your engine needs.

Aftermarket versions often use lower-quality media or plastics that cloud, crack, or leak over time. With OEM, you get long-term reliability and compatibility designed into every detail. It’s the kind of practical choice seasoned boaters make automatically — not because it’s fancy, but because it works, season after season.

FAQ

Q1: Which engines does the 8M0157133 Inline Fuel Filter fit?

It fits a range of Mercury and Mariner two-stroke and four-stroke outboards from 4 to 20 horsepower.

Q2: What makes this part better than aftermarket options?

It’s built to Mercury Marine specifications with reliable filtration media and durable polymer housing.

Q3: How do I know it’s the right replacement?

Check your owner’s manual or match your engine’s horsepower and year to the compatibility list.

Q4: Can it be used in saltwater and freshwater?

Yes — the corrosion-resistant design handles both without issue.

Q5: Is installation straightforward for most boat owners?

Very. Most can replace it in minutes with basic hand tools.

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