Mercury—Inline Water Separating Fuel Filter | High-Capacity Filtration | Marine-Grade Construction | 8M0154756

Overview

When you spend enough days on the water, you learn that clean fuel is more than a maintenance item—it’s the heartbeat of a smooth-running engine. There’s a calm that settles in when you know your motor is feeding on clean, dry fuel, especially when the wind is up or you’re running long stretches between coves. The Mercury Marine part number 8M0154756 Water Separating Fuel Filter brings that peace of mind back into the equation. It’s built to shield your Yamaha or Suzuki outboard from the kind of contamination that can turn a perfect day into a tow call.

Key Features

• Ten-micron filtration for over ninety percent efficiency
• Designed for Yamaha 125–425hp and Suzuki 200–350hp outboards
• Blocks water intrusion and fine particulate debris
• Direct replacement for Yamaha 6P3-24563-00-00, 6P3-24563-01-00, 6P3-WS24A-00-00, 6P3-WS24A-01-00 and Sierra 18-79809
• Easy installation and removal
• Built with marine-grade materials for reliability in harsh environments

Engine & Boat Compatibility

This filter is engineered for higher-output outboards, including:

• Yamaha outboards from 125hp up to 425hp
• Suzuki outboards from 200hp up to 350hp
• Ideal for center consoles, offshore fishing rigs, bay boats, pontoons and multi-engine setups
• Works with both two-stroke and four-stroke systems, depending on engine model

It’s especially valuable for engines running heavy hours or operating in environments where fuel quality varies from marina to marina.

Performance & Practical Benefits

The difference a quality fuel filter makes isn’t always loud or dramatic—it’s in how steady your engine runs, how confidently it climbs through the throttle, and how clean it sounds at idle. This filter keeps water away from sensitive injectors, helping your engine maintain smooth starts and strong acceleration. The ten-micron element catches fine contaminants that can otherwise eat away at pumps and internal components.

You’ll feel the results in a tighter, more predictable response across all RPMs. Replacing it each season keeps the fuel system clean, reduces hesitation under load and supports better fuel efficiency. And because this filter is built for inline use, swapping it out is straightforward—even if you’re doing the job at the dock with a basic tool roll.

Why Buy OEM

Seasoned boaters stick with OEM-grade parts for a reason:

• Engineered to Mercury Marine’s reliability standards
• More consistent filtration than many aftermarket options
• Reduces long-term wear on expensive fuel-system components
• Designed to fit correctly the first time
• Provides dependable performance in both freshwater and saltwater conditions

Choosing a genuine Mercury Marine part means choosing fewer surprises and more time doing what you came out here to do—run your boat with confidence.

FAQ

Q1: Which engines does this filter fit?

It fits Yamaha outboards from 125–425hp and Suzuki outboards from 200–350hp.

Q2: What makes it better than aftermarket filters?

Its ten-micron filtration and marine-grade construction offer superior long-term protection.

Q3: How do I confirm it’s the right replacement?

Check your engine’s model and serial number and compare it to the Yamaha and Sierra part numbers it replaces.

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

Absolutely—its materials are designed for either environment.

Q5: Is installation simple?

Yes, the filter can be installed or replaced using common tools and basic mechanical skill.