Mercury – Water Separating Fuel Filter | Engine Protection Component | High-Efficiency Filtration | 8M0126144

Overview

If you’ve spent any time offshore or running long stretches of inland water, you know how quickly fuel quality can change. A little water in the tank, a bit of debris kicked up from a choppy day — it all finds its way toward your engine. That’s why a good fuel filter isn’t just a maintenance item; it’s peace of mind. The Mercury 8M0126144 Water Separating Fuel Filter delivers that quiet confidence, letting you enjoy the ride knowing your outboard is getting clean, steady fuel every time you throttle up.

Key Features

• Removes water and impurities from fuel to protect engine components
• Ten-micron filtration with more than ninety-five percent efficiency
• Designed specifically for Mercury V6 and V8 FourStroke outboards
• Helps maintain engine performance, efficiency, and economy
• Ideal for routine replacement every one hundred hours of normal use

Engine & Boat Compatibility

• Fits Mercury 3.4 liter V6 and 4.6 liter V8 FourStroke outboards from 175 to 300 horsepower
• Fits Mercury 3.4 liter V6 and 4.6 liter V8 FourStroke 150R to 500R horsepower performance models
• Common on center consoles, bay boats, pontoons, runabouts, and offshore rigs
• Suitable for a wide range of modern Mercury FourStroke setups

Performance & Practical Benefits

You’ll feel the difference when a filter is doing its job properly. The engine idles smoother, responds more crisply, and pulls with a clean, unbothered strength. This Mercury Marine part is designed to strip out water — the number one enemy of modern fuel systems — before it reaches sensitive injectors or pumps. The ten-micron element works like a steady gatekeeper, catching the fine particles that can build up over a busy season.

The design is straightforward, but the impact is anything but subtle. When the fuel stays clean, the engine maintains a tight, predictable rhythm. Cold starts feel easier. Mid-range acceleration stays strong even on long, hot days. And over time, the reduced stress on internal components helps preserve the life of the entire fuel system. Installation is simple, too — most boaters swap this filter out as part of a routine service, and the fit is snug and secure without any guesswork.

Why Buy OEM

When it comes to filtration, precision matters. A genuine Mercury Marine part like this one is engineered around the exact flow rates, pressures, and filtration demands of Mercury V6 and V8 FourStroke outboards. You’re not rolling the dice on whether an aftermarket design will separate water effectively or match the correct micron rating. This filter is built to perform right out of the box and keep performing season after season. It’s cost-effective, reliable, and designed with the same mindset Mercury puts into their engines — protect the heart of the boat so you can enjoy more days on the water without surprises.

FAQ

Q1: Which engines does the Mercury 8M0126144 Water Separating Fuel Filter fit?

It fits Mercury 3.4 liter V6 and 4.6 liter V8 FourStroke models from 175 to 300 horsepower, and 150R to 500R performance engines.

Q2: What sets this apart from aftermarket filters?

This Mercury Marine part meets strict filtration and flow standards, offering precise water removal and dependable long-term performance.

Q3: How can I confirm this is the right replacement?

Check your engine model and horsepower range against the compatibility list. If you’re running a modern Mercury V6 or V8 FourStroke, this is likely the correct part number.

Q4: Does it work in both saltwater and freshwater?

Absolutely. It’s designed for harsh marine environments and performs well in any type of water use.

Q5: Is installation simple for most boat owners?

Yes. Replacing this filter is a routine task most owners can handle with basic tools and a few minutes of time.