Mercury – Quicksilver 823427A1 Rochester 2-Barrel Carburetor Repair Kit | MerCruiser GM 4- & 6-Cylinder Engines (1964–1983) | 823427A1

Overview

If your old MerCruiser isn’t running like it used to — maybe it stumbles, idles rough, or burns extra fuel — your carburetor might be due for a rebuild. The Quicksilver 823427A1 Rochester 2-Barrel Carburetor Repair Kit gives you everything you need to restore clean, efficient fuel delivery on 1964–1983 MerCruiser 4- and 6-cylinder engines made by GM.

This complete OEM kit includes all the essential parts — gaskets, an accelerator pump, inlet needle and seat, and a fine 74-micron fuel filter. With precision-fit components and factory-tested materials, it brings your Rochester carb back to smooth, reliable operation.

Key Features

• Purpose: Rebuilds your Rochester 2-barrel carburetor for smooth fuel flow and steady performance.
• Fitment: For 1964–1983 MerCruiser 4- and 6-cylinder GM-based engines.
• Complete Kit: Includes gaskets, accelerator pump, inlet needle and seat, and 74-micron fuel filter.
• Performance: The nylon mesh filter element traps fine contaminants for cleaner fuel delivery.
• Ease of Install: All parts are direct-fit and ready for installation with common shop tools.

Engine & Boat Compatibility

• GM-based MerCruiser 4-cylinder and 6-cylinder engines (1964–1983)
• Found on classic sterndrives, vintage cruisers, and older inboard setups

Performance & Real-World Benefits

The 823427A1 kit restores your carburetor’s efficiency by replacing worn or clogged components that cause hard starting, rough idle, or poor throttle response. The new gaskets and seals ensure a leak-free fit, while the precision accelerator pump and inlet needle maintain proper fuel pressure.

Once installed, your engine starts easier, idles smoother, and runs more efficiently — just like it did when it was new. It’s a quick, affordable fix that can completely transform the way your boat runs.

Why Choose OEM

Mercury’s OEM rebuild kits are engineered for exact fit and durability, using the same materials and dimensions as the original parts. Aftermarket kits often fall short, with gaskets that don’t seal properly or pumps that wear out early.

A genuine Quicksilver carburetor kit ensures factory-level performance, reliability, and protection against ethanol wear — all backed by Mercury’s reputation for quality.

FAQ

Q1: What carburetor does this kit fit?
A: It’s for Rochester 2-barrel carburetors on MerCruiser GM 4- and 6-cylinder engines (1964–1983).

Q2: What’s included?
A: Gaskets, accelerator pump, inlet needle and seat, and a 74-micron nylon mesh fuel filter.

Q3: Will it help with rough idle or poor fuel economy?
A: Yes. Rebuilding the carb with this kit will fix leaks and improve fuel atomization for smoother operation.

Q4: Can I install it myself?
A: Yes. If you’re comfortable working on carburetors, this kit includes everything you need for a straightforward rebuild.

Q5: Why OEM instead of aftermarket?
A: OEM parts fit perfectly, last longer, and maintain proper fuel metering — something aftermarket kits can’t always guarantee.