Mercury – Quicksilver Carburetor Repair Kit | For 1983–1986 MerCruiser Engines with MerCarb 2-Barrel Carburetor | 804845

Overview

When your engine hesitates, idles rough, or just doesn’t pull like it used to, a good carburetor rebuild can bring it back to life. The Mercury Marine 804845 Quicksilver Carburetor Repair Kit includes everything you need to clean and rebuild the MerCarb 2-barrel carburetor found on many 1983–1986 MerCruiser engines. Each part is built to Mercury’s original standards, restoring proper fuel flow, smooth acceleration, and efficient combustion. It’s a complete, ready-to-go kit that helps your classic MerCruiser run like it did the day it left the factory.

Key Features

• Purpose: Restores smooth fuel delivery and performance in aging carburetors.
• Complete Kit: Includes accelerator pump, needle and seat, fuel filter, gaskets, sealing washers, and clips — everything for a full rebuild.
• Precision Fit: Designed for MerCarb 2-barrel carburetors with bottom-fill accelerator pump cavity.
• Performance: Meets or exceeds original factory specifications for flow and reliability.
• Ease of Use: All-in-one OEM rebuild kit — no guessing, no missing parts.

Engine & Boat Compatibility

• 1983–1986 MerCruiser engines equipped with MerCarb 2-barrel carburetors, including:
• 120HP, 140HP, 470HP, 185HP, 200HP, and 898HP models

Performance & Real-World Benefits

The 804845 carburetor repair kit helps breathe new life into older MerCruiser engines. Over time, fuel varnish, debris, and worn seals can cause hesitation, flooding, or poor throttle response. Rebuilding with this kit restores precise fuel metering, smooth idle, and crisp acceleration.

Each component is engineered to Mercury’s specifications, so you know it fits perfectly and performs as expected. Once rebuilt, your carburetor will deliver more consistent starts, cleaner running, and better fuel efficiency — making every cruise smoother and more dependable.

Why Choose Mercury OEM

The Quicksilver 804845 is a genuine Mercury Marine rebuild kit, made from materials that stand up to modern fuels and ethanol blends. Aftermarket kits may not include every part or match Mercury’s exact tolerances, which can lead to leaks or poor performance.

Mercury OEM kits are field-tested and proven to work the first time, ensuring you spend more time on the water and less time wrenching. It’s the same kit used by Mercury service technicians — trusted for decades to keep classic MerCruisers running right.

FAQ

Q1: What engines is this kit made for?
It’s designed for 1983–1986 MerCruiser engines with MerCarb 2-barrel carburetors — 120, 140, 470, 185, 200, and 898 models.

Q2: What’s included in the kit?
Everything needed for a rebuild: accelerator pump, needle and seat, fuel filter, gaskets, sealing washers, and clips.

Q3: Why rebuild instead of replace?
A proper rebuild restores like-new performance at a fraction of the cost of replacement.

Q4: How hard is it to install?
If you’re comfortable working with carburetors, it’s straightforward — the kit includes all necessary components.

Q5: Why OEM instead of aftermarket?
Mercury’s OEM parts fit precisely and last longer, ensuring reliable operation and proper fuel flow every time.