Rochester 2-Barrel Carburetor Repair Kit – Fits MerCruiser & OMC (Replaces 823427A1, 982384)
Rochester 2-Barrel Carburetor Repair Kit – Fits MerCruiser & OMC (Replaces 823427A1, 982384) is backordered and will ship as soon as it is back in stock.
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Rochester 2-Barrel Carburetor Repair Kit – Fits MerCruiser & OM...
Product Details
This comprehensive Rochester 2-Barrel Carburetor Repair Kit provides all necessary components to rebuild and restore Rochester 2G carburetors found on a wide range of MerCruiser and OMC marine engines. It is designed for MerCruiser 4-cylinder (90-140HP) and 6-cylinder (153-165HP) models from 1964–1983, as well as various OMC engines from the 1970s–1980s that use the Rochester 2G carburetor.
It serves as a direct replacement for MerCruiser 823427A1, OMC 982384/982386, Sierra 18-7746, and GLM 76068/76075, ensuring a precise fit and reliable function. This kit has been updated with alcohol-resistant components to handle modern ethanol-blended fuels.
- Engineered for direct-replacement installation.
- Includes gaskets, seals, and an accelerator pump assembly.
- Components are alcohol-resistant for compatibility with modern fuels.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| MerCruiser | 823427A1 |
| OMC | 982384 |
| OMC | 982386 |
| Sierra | 18-7746 |
| GLM | 76068 |
| GLM | 76075 |
| Quicksilver | 823427A1 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For MerCruiser models, verify your serial number (S/N) to ensure correct application.
For OMC applications, this kit fits various 90–330HP engines equipped with Rochester 2G carburetors during the 1970s and 1980s.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| MerCruiser | MCM 90 | 90 | 4-Stroke | 1964–1983 | 823427A1 | S/N 3225967 & Above |
| MerCruiser | MCM 120/2.5L | 120 | 4-Stroke | 1964–1972 | 823427A1 | S/N 2520424 & Below |
| MerCruiser | MCM 120/2.5L | 120 | 4-Stroke | 1972–1983 | 823427A1 | S/N 2520425 & Above |
| MerCruiser | MCM 140/3.0L/3.0LX | 140 | 4-Stroke | 1964–1983 | 823427A1 | S/N 2816416 & Below |
| MerCruiser | MCM 140/3.0L/3.0LX | 140 | 4-Stroke | 1983–1989 | 823427A1 | S/N 2816418-C856558 |
| MerCruiser | MCM 160 | 160 | 4-Stroke | 1964–1983 | 823427A1 | S/N 2492035 & Below |
| MerCruiser | MCM 160 | 160 | 4-Stroke | 1983–1989 | 823427A1 | S/N 249069 & Above |
| MerCruiser | MCM 165 (6cyl) | 165 | 4-Stroke | 1964–1983 | 823427A1 | S/N 3354701 & Below |
| MerCruiser | MCM 165 (6cyl) | 165 | 4-Stroke | 1983–1989 | 823427A1 | S/N 3354702 & Above |
| OMC | Various with Rochester 2G Carb | 90-330 | 4-Stroke | 1970s–1980s | 982384/982386 | For engines with Rochester 2G carburetors |
The following table lists other brands and engine models known to use compatible Rochester 2G carburetors.
| Engine Brand/Model | Type | OEM Part No. | Notes |
|---|---|---|---|
| Chris-Craft | 153, 181, 283 | 823427A1 | For Rochester 2G carburetors |
| Crusader | 153, 225, 283, 327 | 823427A1 | For Rochester 2G carburetors |
| Gray | 215, 232 | 823427A1 | For Rochester 2G carburetors |
| Grumman Allied | 300 | 823427A1 | For Rochester 2G carburetors |
| OMC | 91, 97, 153, 181, 183, 225, 250, 283, 330 | 982384/982386 | For Rochester 2G carburetors |
| Mercury Marine | 90, 100, 110, 120, 140, 153, 230, 250 | 823427A1 | For Rochester 2G carburetors |
| Palmer | 215 | 823427A1 | For Rochester 2G carburetors |
Technical Specs
- Product Type
- Carburetor Repair Kit
- Installation
- Direct Replacement
- Fuel Type
- Gasoline
- Weight
- 0.3 lb (0.14 kg)
- Dimensions
- Height: 3.0 in; Width: 17.0 in; Length: 22.0 in
- Other Attributes
- For Rochester 2G (2-barrel) carburetors; alcohol-resistant components
- Warranty
- Manufacturer dependent
What’s in the Box
- 1 x Flange gasket
- 1 x Throttle Body gasket
- 1 x Bowl Cover gasket
- 1 x Venturi Cluster gasket
- 1 x Accelerator Pump Assembly (alcohol resistant cup)
- 1 x Inlet needle and seat assembly with gasket
- 1 x Fuel inlet gasket
- 1 x Float height setting tool
- 1 x Illustrated instructions
Installation Notes
- Disconnect the battery and ensure the engine is cool. Relieve any fuel system pressure.
- Carefully disconnect the fuel lines and linkages from the carburetor, noting their positions.
- Remove the carburetor from the intake manifold.
- Disassemble the carburetor on a clean workbench. Keep parts organized in trays.
- Clean all metal components with a dedicated carburetor cleaner. Do not soak rubber or plastic parts.
- Carefully replace the old gaskets, seals, needle, and accelerator pump with the new parts from the kit.
- Use the included tool to set the float height according to your service manual specifications.
- Reassemble the carburetor, ensuring all screws are properly torqued.
- Install the rebuilt carburetor back onto the manifold with the new flange gasket.
- Reconnect all linkages and fuel lines, and start the engine to check for leaks and proper idle.
Troubleshooting & FAQ
How do I confirm this kit fits my specific engine?
The best way is to match your engine model, year, and serial number against our compatibility tables. If you can identify your carburetor as a Rochester 2G (2-barrel) model and your original part number matches one listed in the Part Number Matrix (like MerCruiser 823427A1 or OMC 982384), this kit should fit.
What are signs my carburetor needs rebuilding?
Common symptoms include difficulty starting, rough idling, engine hesitation or stalling, black smoke from the exhaust (running rich), or visible fuel leaks from the carburetor body. This kit is designed to fix issues caused by worn gaskets, a faulty accelerator pump, or a leaking needle and seat.
Is this kit compatible with modern ethanol-blended fuels?
Yes. This kit includes an updated accelerator pump and other components made from alcohol-resistant materials to prevent deterioration from E10 and other ethanol-blended gasolines, which is a common failure point for older carburetor parts.
What common mistakes should I avoid during installation?
Avoid overtightening screws, which can warp the carburetor body. Ensure all gasket surfaces are perfectly clean and dry before installing new gaskets. Do not spray carburetor cleaner on rubber or plastic parts. Finally, be sure to set the float height correctly, as an incorrect setting will cause performance issues.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.
Shipping speed & cost
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns
Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.
Safety & Important Info
- Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.
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