Mercury – Weber 4-Barrel Carburetor Repair Kit | Carburetion System | Precision Marine Components | 8M0120193

Overview

If you’ve ever run an older MerCruiser and felt it hesitate for just a moment when you drop the throttle, you know how much a healthy carburetor matters. Boats from the late eighties and nineties have a certain charm—they’re tough, familiar, and full of memories. But they only stay dependable when the carb is sealed, synced, and breathing the way the engine was built to. The Quicksilver 8M0120193 Weber 4-Barrel Carburetor Repair Kit brings that confidence back.

There’s something strangely satisfying about rebuilding a carb: laying out the parts, cleaning every passage, and knowing that when you’re done, your engine will settle into a smooth idle instead of chasing itself. This kit helps make that possible, giving you everything you need in one box and ensuring your engine responds the way it should when you ease into a turn or punch through a strong headwind.

Key Features

• Complete repair kit for Weber 4-barrel carburetors on a wide range of MerCruiser engines.
• Includes gaskets, accelerator pump, inlet needle, seat, and linkage components.
• Designed for cleaning, servicing, and full carburetor rebuilds.
• Built to meet or exceed Mercury Marine OEM specifications.
• Durable components withstand marine fuel blends and tough conditions.

Engine & Boat Compatibility

• Fits 1987–1997 MerCruiser sterndrive, inboard, and Tow Sport inboard 350 Mag and 5.7L/LX engines using Weber 9665 and 9781 carburetors.
• Also fits 1990–1997 MerCruiser 454 Mag, 502 Mag, 7.4L, and 8.2L engines.
• Common on bowriders, cruisers, ski boats, wake boats, and classic performance hulls.
• Ideal for both freshwater and saltwater boats that rely on strong hole-shot performance and clean acceleration.

Performance & Practical Benefits

A clean, rebuilt carb can completely transform how your boat behaves on the water. With the new accelerator pump installed, throttle response feels sharper and more predictable. Fresh gaskets and seals create tight, reliable mating surfaces, helping eliminate leaks that cause bogging or inconsistent idle.

You’ll feel the difference the first time you fire up the engine. The idle becomes steadier. Acceleration smooths out. And instead of wondering whether your fuel system is holding you back, you’ll feel that steady, confident pull that older MerCruiser engines are famous for. The parts in this kit are resilient, holding up against heat cycles, vibrations, and today’s fuel blends. In short—it helps your engine do what it was designed to do.

Why Buy OEM

Choosing a genuine Mercury Marine part:

• Ensures perfect fitment without modification or guesswork.
• Delivers factory-level performance and long-term reliability.
• Reduces the risk of tuning issues caused by mismatched aftermarket components.
• Provides everything needed in one organized kit, saving time and avoiding repeat trips for missing parts.

If you want your carb to perform like new, OEM is the safest, smartest route—especially on engines that deserve proper care.

FAQ

Q1: Which engines does the 8M0120193 repair kit fit?

It fits 1987–1997 MerCruiser 350 Mag, 5.7L/LX models and 1990–1997 MerCruiser 454 Mag, 502 Mag, 7.4L, and 8.2L engines using Weber 9665 or 9781 carburetors.

Q2: What makes this different from aftermarket kits?

It meets Mercury Marine OEM specifications, ensuring proper sealing, smooth operation, and long-term durability.

Q3: How can I confirm this kit is correct for my carb?

Check your carburetor model number—this kit is for Weber 9665 and 9781 units.

Q4: Can it be used on both freshwater and saltwater boats?

Yes, all components are designed for modern marine environments.

Q5: Is installation manageable for most boat owners?

If you’re comfortable rebuilding a carburetor, absolutely. Otherwise, a technician can install it quickly.