Mercury – Carburetor Repair Kit | FourStroke Series | Precision Fuel System Components | 8M0044577

Overview

There’s a certain peace you feel when your small outboard fires on the first pull and settles into that steady, familiar hum. It sets the tone for the whole day. But when a carburetor starts drifting out of tune—maybe the idle wanders, maybe it bogs when you throttle up—you feel it instantly. That’s when a proper rebuild makes all the difference. The Mercury Marine part number 8M0044577 Carburetor Repair Kit is designed for exactly those moments, bringing your engine back to the smooth, easy confidence you rely on.

With this kit, you’re not just swapping parts. You’re restoring the way your outboard breathes, fuels, and responds. And because it’s genuine Mercury, everything fits exactly where it should. No trimming, no hoping the gasket lines up, no wondering if the float height is slightly off. It’s the kind of straightforward, trustworthy repair that reminds you why OEM parts matter on the water.

Key Features

• Complete carburetor rebuild kit engineered for select FourStroke outboards.
• Includes new float, float pin, inlet needle, bowl gasket, air box O-ring, and flange gaskets.
• Durable marine-grade components built for long-term fuel stability.
• Designed for precise sealing to maintain proper fuel levels and smooth idle.
• Manufactured to Mercury Marine original equipment specifications.

Engine & Boat Compatibility

• Fits the following Mercury FourStroke models:
  • 10–15 horsepower FourStroke (serial numbers 0R235949–0R833819)
  • 20 horsepower FourStroke (serial numbers 0R235168–0R833819)
• Ideal for:
  • Compact fishing boats
  • Inflatable tenders
  • Lightweight aluminum skiffs
  • Pontoon kickers
  • Small runabouts

These mid-range portable engines are known for their reliability, and this kit helps keep them running at the level they were designed for.

Performance & Practical Benefits

When a carburetor is properly rebuilt, you can feel the difference right away. The throttle responds more predictably. The idle smooths out. The engine no longer struggles when shifting from neutral into gear or climbing onto plane. This kit brings all those benefits back by restoring the internal components that control fuel flow.

The new float and inlet needle work together to keep the fuel chamber at the right level, while the gaskets and O-ring create the secure, airtight seal the engine depends on. Small outboards can be sensitive to even minor leaks or misalignments, and this kit addresses each of those failure points with parts tailored perfectly to the engine’s original specs.

Whether you’re trolling slowly along a shoreline or pushing across open water with family aboard, a well-tuned carburetor just feels better. It’s steady. It’s clean. And it gives you a level of control that makes boating more enjoyable and far less stressful.

Why Buy OEM

When dealing with the fuel system, you don’t want “close enough.” You want components that match the original design down to the millimeter. Mercury’s OEM parts are engineered specifically for the ethanol-blended fuels many boaters encounter today, and they hold their shape and performance far better than generic options.

Choosing OEM means:

• Better long-term reliability
• Fewer repeat carburetor adjustments
• Cleaner idle and smoother acceleration
• Perfect fit every time
• Materials designed for real-world marine environments

It’s the smart choice for boaters who value dependability and don’t want to troubleshoot avoidable problems.

FAQ

Q1: Which engines does this kit fit?

It fits Mercury 10, 15, and 20 horsepower FourStroke outboards within the serial ranges listed above.

Q2: Why choose this over aftermarket kits?

OEM kits offer better material quality, precise fit, and reliable performance without constant readjusting.

Q3: How do I confirm compatibility?

Check your serial number and horsepower—it must match the ranges specified for this part number.

Q4: Is it suitable for saltwater and freshwater use?

Yes. All components are designed for full marine exposure.

Q5: Can most boaters install this themselves?

If you’re comfortable working with small engine components and follow a service manual, yes. It’s a straightforward job for most boat owners.