Mercury – Fuel Filter Cartridge | Sterndrive & Inboard Fuel System | Gasoline Filtration | 8M0046752

Overview

Every boater eventually learns that smooth power begins long before the throttle is pushed forward. It starts with clean fuel and a filter you can depend on—one that quietly protects your engine from the things you never see coming. The Mercury 8M0046752 Fuel Filter is one of those small parts that makes a big difference. When it’s doing its job, you feel the steadiness in the idle, the clean pull as you come onto plane, and the confidence that your day on the water won’t be cut short by contaminated fuel.

Key Features

• Replacement fuel filter cartridge for MerCruiser gasoline sterndrives
• Captures moisture and harmful contaminants before they reach the engine
• Includes filter element, pressure spring, and rubber gaskets
• Designed for fuel pumps with downward-facing filter caps
• Engineered to Mercury Marine OEM filtration standards

Engine & Boat Compatibility

Compatible with MerCruiser gasoline engines equipped with fuel pumps that use a downward-facing filter cap:

• 4-cylinder MerCruiser sterndrive engines
• 6-cylinder MerCruiser sterndrive engines

Common boat types:

• Sport cruisers
• Family runabouts
• Bowriders and deck boats
• Pontoon and tri-toon boats
• Small cabin cruisers

Performance & Practical Benefits

Fuel quality affects everything your boat does—from its first start of the morning to the last idle back to the trailer. This Mercury Marine part keeps fuel clean by catching the microscopic debris that can rob horsepower or cause stalling. It helps your engine maintain a smooth, predictable feel, even when you’re running through choppy water or pushing long hours on a hot day.

The filter sits inside the fuel pump housing, sealing neatly with the included rubber gaskets and pressure spring. Once in place, it creates a tight, secure fit that won’t weep, rattle, or cause air intrusion. You’ll notice better throttle response, fewer hiccups at idle, and an overall cleaner sound from the engine.

Durability is another strength of this filter. It’s engineered specifically for marine environments—high humidity, vibration, long storage cycles, and constant thermal changes. You won’t have to worry about swollen media, collapsing filter walls, or uneven fuel flow. It’s built to last and built to protect.

Why Buy OEM

There’s a reason experienced boaters stick with Mercury OEM filters: they’re designed to work exactly as the engine engineers intended. They fit right the first time, offer consistent filtration, and hold up to years of real-world use.

With OEM, you’re getting:

• Consistent fuel pressure and clean filtration
• A filter designed for the exact flow rate your engine requires
• Reliable seals and proper gasket compression
• Longer service life compared to many aftermarket alternatives
• Better protection against ethanol-affected fuel degradation

When you rely on your boat for family time, fishing trips, or long summer weekends, that kind of reliability matters.

FAQ

Q1: Which engines does this filter fit?

It fits MerCruiser 4-cylinder and 6-cylinder gasoline engines with downward-facing fuel pump filter caps.

Q2: Why choose OEM over aftermarket?

OEM filters are engineered specifically for Mercury fuel systems, ensuring correct flow and long-term reliability.

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

Match your engine model or check your owner’s manual—it will list the correct part number.

Q4: Is it suitable for both freshwater and saltwater boats?

Yes. It’s built to withstand harsh marine environments in both conditions.

Q5: Is installation simple?

Very. The included pressure spring and gaskets make it a quick, clean replacement with basic tools.