Mercury – Gen III Cool Fuel Module Cover & Seal | MPI Series | Stainless and Aluminum | 8M0178981

Overview

Anyone who’s spent time around a MerCruiser MPI engine knows how important the Cool Fuel system is. It’s one of those components you rarely see, but you absolutely feel its influence every time you push the throttle forward. When the fuel stays cool and clean, the engine runs smoother, pulls harder, and just feels more willing. That’s why keeping that system protected with the right parts matters. The Quicksilver Gen III Cool Fuel Module Cover and Seal 8M0178981 brings back that confidence—clean, dry, secure, and ready for another season on the water.

This is one of those small but essential pieces that keeps your boat from missing a beat. Whether you’re cruising a quiet river or carving through open water, knowing the Cool Fuel module is properly sealed and shielded brings the kind of peace of mind only seasoned boaters appreciate.

Key Features

• Direct-replacement Cool Fuel Module cover and seal kit for Gen III systems
• Includes aluminum top cover, stainless steel regulator, cover seal, and fuel pump seal kit
• Designed for long-term durability in constant contact with fuel
• Built to withstand heat, vibration, moisture, and ethanol exposure
• Meets all Mercury Marine OEM engineering and performance standards

Engine & Boat Compatibility

• Fits MerCruiser MPI engines equipped with the Gen III Cool Fuel module
• Commonly used on:
  • Bowriders
  • Sport cruisers
  • Wake boats and tow sport setups
  • Cabin cruisers and multipurpose family boats

Performance & Practical Benefits

If your current Cool Fuel cover is warped, leaking, or showing corrosion, you’ll usually feel it before you see it—rougher idle, hesitation, or that uneven mid-range pull. Replacing it with a fresh, well-sealed assembly tightens everything back up. Fuel stays cool, pressure stays stable, and the system can do its job without losing efficiency to heat or vapor intrusion.

The aluminum and stainless steel construction gives this part a sturdy, confident feel the moment it’s in your hands. Once installed, it restores the secure, smooth operation your engine was designed for. You’ll notice steadier acceleration, more consistent fuel delivery, and fewer surprises when you drop the hammer or settle into a long cruise.

Maintaining this system isn’t just about performance—it’s about protecting your investment. A healthy Cool Fuel module helps prevent pump wear, injector issues, and unexpected downtime that can cut a day on the water short.

Why Buy OEM

Choosing a genuine Mercury Marine part is one of the smartest moves you can make for long-term reliability:

• Designed specifically for the Gen III Cool Fuel system
• Better materials and tighter sealing than most aftermarket kits
• Ensures proper fuel pressure and temperature regulation
• Direct, effortless installation that fits the first time
• Tested in real-world marine conditions—not just in a lab

When you’re miles from the marina, “good enough” isn’t good enough.

FAQ

Q1: Which engines does this Cool Fuel Module Cover and Seal fit?

It fits MerCruiser MPI engines equipped with the Gen III Cool Fuel module.

Q2: What makes it better than aftermarket options?

OEM parts match the system’s original engineering, providing superior sealing, corrosion resistance, and long-term reliability.

Q3: How do I know if this is my correct replacement?

If your MerCruiser uses a Gen III Cool Fuel module, this is the factory-specified replacement cover and seal kit.

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

Absolutely—materials are chosen specifically for harsh marine environments.

Q5: Is installation straightforward?

Yes. Most owners install it with common tools, but a technician can handle it quickly if you prefer.