Mercury – Water Separating Fuel Filter Kit | L6 Verado Series | Precision Marine Filtration | 8M0103686

Overview

When you run a Mercury L6 Verado, you expect a certain kind of experience—smooth, responsive power and the quiet confidence that your engine is getting the clean fuel it deserves. Nothing derails a day on the water faster than contaminated fuel, and anyone who has battled rough running or lost power offshore knows that feeling all too well. That is why the Mercury 8M0103686 Water Separating Fuel Filter Kit earns such trust. It keeps water and debris out of your fuel system, giving you the steady performance and peace of mind that lets you focus on the horizon instead of what might be happening inside the engine.

Key Features

• Removes water, sediment, and contaminants from fuel before they reach the engine
• Designed for under-cowl installation on Mercury L6 Verado outboards equipped with a fuel supply module
• Includes filter, bracket, hose, and harness for a seamless factory-grade fit
• Provides an alternative to a vessel-mounted filter system
• Engineered to maintain fuel flow and protect engine performance in demanding environments

Engine & Boat Compatibility

• Fits Mercury L6 Verado outboards from 200 horsepower to 400 horsepower
• Fits Mercury Racing L6 400R models with serial numbers 2B141124 through 3B342962
• Ideal for center consoles, offshore fishing boats, multipurpose family boats and high-performance hulls powered by L6 Verado platforms

Performance & Practical Benefits

Fuel issues rarely show up when you are tied to the dock—they show up when you are pushing your boat, running into a stiff headwind or carving through weekend chop. This filter kit is built to keep those moments problem-free. Its water-separating media traps moisture and debris before they can reach injectors or pumps, helping your engine maintain the tight, smooth throttle response that Verado owners love.

The under-cowl design is a perk on its own. By positioning the filter as close as possible to the engine, you reduce the chance of water intrusion and maintain a more stable fuel delivery path. The kit fits cleanly, installs without frustration and gives your engine a quieter, more predictable heartbeat. Over time, you will notice fewer power dips, easier starts and a general sense of reliability that becomes second nature.

Why Buy OEM

With something as critical as fuel filtration, shortcuts are a gamble. A genuine Mercury Marine part like the 8M0103686 filter kit is engineered with your Verado system in mind—its flow rate, pressure tolerances and fitment are all matched to factory specifications. That means better long-term performance, fewer hidden issues and a level of protection no aftermarket substitute can replicate. When the weather turns or the miles add up, you will be glad you chose the part Mercury designed specifically for your engine.

FAQ Section

Q1: Which engines does this filter kit fit?

It fits Mercury L6 200–400 horsepower Verado outboards and Mercury Racing L6 400R models within the listed serial range.

Q2: How is this different from an aftermarket filter?

It is designed to match Verado fuel system specifications exactly, providing proper flow, filtration and durability without guesswork.

Q3: How do I confirm it is the right replacement?

Match your engine model and serial number with the kit’s compatibility list or check your owner’s manual.

Q4: Can it be used in both saltwater and freshwater?

Absolutely. It is built for long-term reliability in any marine environment.

Q5: Is installation straightforward?

Most owners comfortable with basic maintenance can install it with common tools.