Mercury – On-Engine Water Separating Fuel Filter | V6 & V8 FourStroke Series | Ten-Micron Filtration | 8M0106635

Overview

Every boater knows that fuel quality can make or break a day on the water. You can run the best engine Mercury has ever built, but if water or debris sneaks into your fuel system, you’ll feel it—hesitation in the throttle, loss of power, or that uneasy sputter none of us want to hear when we’re running home ahead of a storm. The Mercury 8M0106635 On-Engine Water Separating Fuel Filter is the quiet hero that keeps those worries at bay. It sits under the cowl on your V6 or V8 FourStroke outboard, filtering what you cannot see, keeping your engine breathing clean and running strong. There’s real comfort in knowing something this small plays such a big role in your engine’s reliability.

Key Features

• Ten-micron water separating fuel filter for superior contaminant removal
• Designed to eliminate particles, water and debris before they reach the engine
• Built for Mercury 3.4-liter V6 and 4.6-liter V8 FourStroke outboards
• Helps maintain fuel efficiency and consistent throttle response
• Replace every season or every 100 hours, depending on your usage

Engine & Boat Compatibility

• Fits Mercury FourStroke outboards from 150 to 300 horsepower
• Compatible with 3.4-liter V6 and 4.6-liter V8 platforms
• Commonly installed on center consoles, bay boats, pontoons, walkarounds and multi-species fishing boats
• Designed for on-engine use, complementing vessel-mounted filtration systems

Performance & Practical Benefits

Fuel can pick up a surprising amount of debris over time—condensation in the tank, dirt from marina pumps, or rust from aging fuel lines. A filter that can capture tiny particles and separate water before it reaches the injectors makes all the difference. With the 8M0106635 filter in place, your engine breathes clean fuel only, resulting in a smoother idle, steadier acceleration and far fewer surprises when you push the throttle forward.

The ten-micron rating is tight enough to catch harmful contaminants but still allows strong, unrestricted fuel flow. You’ll notice the difference most in choppy conditions or while trimming up for holeshot, when engines tend to show the first signs of fuel restriction. With this filter doing its job, the power delivery feels steady and dependable.

Its durable construction stands up to long seasons in saltwater or freshwater. Even after hours of running, it maintains strong filtration without collapsing or clogging prematurely. And because Mercury designed it specifically for their V6 and V8 engines, installation feels straightforward and intuitive—no odd angles, no questionable fitment, just a clean swap each season.

Why Buy OEM

An original Mercury filter isn’t just a convenience—it’s a safeguard. Aftermarket filters often look similar, but internal materials and flow characteristics can vary wildly. With a Mercury Marine part, you know exactly what your engine is getting: the correct micron level, the proper flow rate and the long-term reliability that protects your injectors and fuel rails. You avoid wasted fuel, uneven running and the costly headaches that come from guessing on parts. It’s the kind of decision seasoned boaters make because it pays off every time the engine turns over.

FAQ Section

Q1: Which engines does this fuel filter fit?

It fits Mercury 3.4-liter V6 and 4.6-liter V8 FourStroke outboards from 150 to 300 horsepower.

Q2: What makes this better than aftermarket options?

It delivers precise ten-micron filtration and consistent flow designed specifically for Mercury’s fuel system.

Q3: How do I confirm this is the right filter for my engine?

Check your owner’s manual or verify that your outboard is a V6 or V8 FourStroke within the 150–300 horsepower range.

Q4: Can I use it in both saltwater and freshwater?

Yes—its construction is engineered for dependable performance in all environments.

Q5: Is installation simple?

Most boaters can replace it themselves with basic tools, but Mercury recommends following your manual’s instructions.