Mercury – Inline Fuel Filter | Under-Cowl Fuel System | Translucent Composite | 879885Q

Overview
There is a certain comfort that comes from knowing your outboard is getting the cleanest fuel possible. When you spend enough weekends on the water, you learn that smooth power is not just about horsepower—it is about every small component doing its job without fuss. The Mercury 879885Q Inline Fuel Filter delivers that quiet confidence. Whether you are chasing an early tide, loading up the family for an easy cruise, or pushing toward your favorite offshore ledge, this filter helps your engine run the way it should: steady, responsive, and ready for whatever the day brings.

Key Features

• Twenty-micron filtration captures harmful fuel-borne contaminants

• Translucent composite housing allows visual inspection of fuel quality and debris

• Fits under the outboard cowl with no extra hardware required

• Easy replacement using existing hose clamps

• Engineered to meet Mercury Marine original equipment filtration standards

Engine & Boat Compatibility
Compatible with a wide range of Mercury and Mariner outboards, including:

• 30 and 40 horsepower EFI FourStroke

• 40–60 horsepower EFI FourStroke (4-cylinder, 996 cc)

• 75–115 horsepower FourStroke (1.7L, serial number 1B366823–2B094995)

• 75–115 horsepower FourStroke (2.1L, serial number 2B094996 and up)

• 150 horsepower EFI FourStroke (1B905505 and up)

• 135–400 horsepower Verado engines

Common on:

• Inshore fishing boats and bay skiffs

• Family runabouts and lake cruisers

• Pontoon boats

• Offshore center consoles powered by Verado systems

Performance & Practical Benefits
A good fuel filter is something you rarely think about—right up until the moment you need it. The 879885Q helps keep those moments off your radar. It intercepts moisture, grit, and fine particles before they ever reach critical components, protecting injectors, pumps, and valves.

The translucent body is one of its most practical advantages. A quick glance tells you exactly what is happening inside your fuel line. You will see if water has pooled or if debris is collecting long before performance suffers. Installation feels refreshingly simple: loosen the clamps, swap the filter, snug everything down, and go. Once installed, the filter maintains a tight, secure seal, holding strong against constant engine vibration and rough chop.

On the water, the difference is subtle but unmistakable—cleaner acceleration, smooth midrange, fewer hiccups at idle. It is the kind of dependability that makes long runs feel easier and slow cruises more relaxed.

Why Buy OEM
You hear it again and again from seasoned boaters: fuel system parts are not the place to gamble.

• Mercury OEM filters are engineered specifically for your outboard’s fuel system

• Consistent filtration protects expensive engine components

• Designed to withstand heat, vibration, and marine moisture

• Provides proper flow and restriction levels for EFI and Verado engines

• Fits right the first time without makeshift adjustments

If you want your engine to last—and perform the way it did on day one—OEM is simply the smart choice.

FAQ

Q1: Which engines does the 879885Q inline fuel filter fit?
It fits many Mercury and Mariner FourStroke outboards from 30 horsepower up through 400 horsepower, including Verado models.

Q2: What makes this different from aftermarket filters?
OEM filters deliver the exact flow rate, micron rating, and durability required by Mercury fuel systems, avoiding the risks that come with off-brand parts.

Q3: How can I confirm it is the right filter for my engine?
Match your engine’s serial number and model with the fitment list above or check your owner’s manual for the recommended filter.

Q4: Is it suitable for both saltwater and freshwater boats?
Yes. It is built for all marine environments, helping guard against moisture intrusion and fuel contamination.

Q5: Is installation easy for most boat owners?
Very. The filter installs under the cowl using existing hose clamps—no extra hardware needed.