Carburetor Repair Kit – Fits OMC Sterndrive & MerCruiser (Replaces 986784, 986799)
Carburetor Repair Kit – Fits OMC Sterndrive & MerCruiser (Replaces 986784, 986799) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
Worry-free returns
You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Product Details
This Carburetor Repair Kit – Fits OMC Sterndrive & MerCruiser restores performance to aging 4-barrel Holley 4160C carburetors. It is designed for a wide range of 6-cylinder and 8-cylinder OMC Sterndrive & Cobra engines from the 1970s through the 1990s, as well as MerCruiser V6 and V8 models from the same era that utilize the Holley 4160C carburetor.
This kit serves as a direct replacement for OMC part numbers 986784 and 986799, MerCruiser 802514, and Sierra 18-7237, providing a comprehensive solution for a full carburetor rebuild.
- Installs as a direct replacement for the original components.
- Specifically designed for 4-barrel Holley 4160C carburetors.
- Includes all necessary gaskets, diaphragms, and seals for a complete overhaul.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| OMC | 986784 |
| OMC | 986799 |
| MerCruiser | 802514 |
| Sierra | 18-7237 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
OMC Sterndrive & Cobra: Fits various V6 and V8 engines from the 1970s to 1990s equipped with Holley 4160C carburetors.
MerCruiser: Compatible with V6 and V8 models from the 1970s to 1990s using Holley 4160C carburetors.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| OMC | Sterndrive | 5.8L | 4-Stroke | 1989 | 986784/986799 | For Holley 4160C carburetors |
| OMC | Cobra | V6 & V8 | 4-Stroke | 1970s–1990s | 986784/986799 | For Holley 4160C carburetors |
| MerCruiser | V6 & V8 | 4-Stroke | 1970s–1990s | 802514 | For Holley 4160C carburetors |
Technical Specs
- Product Type
- Carburetor Repair Kit
- Installation
- Direct replacement
- Fuel Type
- Gasoline
- Connection
- Holley 4160C carburetor
- Dimensions
- 1.63" L x 6.38" W x 7.0" H
- Fitting Type
- Holley 4160C carburetor
- Other Technical Attributes
- For 4-barrel Holley carburetors
What’s in the Box
- Gaskets
- Diaphragms
- Seals
- Assorted components for a complete carburetor rebuild
Installation Notes
- Disconnect the negative battery terminal for safety.
- Carefully remove the carburetor from the engine's intake manifold, disconnecting fuel lines and linkages.
- Disassemble the carburetor on a clean workbench, taking photos to remember component placement.
- Thoroughly clean all metal parts with a suitable carburetor cleaner, ensuring all passages are clear.
- Systematically replace old gaskets, diaphragms, seals, and other wear items with the new components from the kit.
- Reassemble the carburetor, ensuring all parts are correctly seated and screws are tightened to specification.
- Reinstall the rebuilt carburetor onto the engine. Reconnect all linkages and fuel lines.
- Start the engine and perform idle speed and air/fuel mixture adjustments according to the engine service manual.
Troubleshooting & FAQ
How do I confirm this kit will fit my specific engine model?
Verify that your engine uses a Holley 4160C 4-barrel carburetor and cross-reference your existing carburetor's part number with those listed in the Part Number Matrix (OMC 986784/986799, MerCruiser 802514). Also, check the compatibility table for your engine model and year range.
What are the signs that my carburetor needs to be rebuilt with this kit?
Common symptoms include rough idling, engine stalling, poor acceleration, black smoke from the exhaust (running rich), fuel leaks, or difficulty starting. These issues are often caused by degraded gaskets, diaphragms, or clogged passages that this kit is designed to fix.
Is this kit for a 2-barrel or 4-barrel carburetor?
This kit is specifically for 4-barrel Holley 4160C model carburetors.
Does this repair kit include the carburetor float?
Carburetor repair kits typically focus on replacing seals, gaskets, needles, and diaphragms. This kit contains components for a standard rebuild; floats are generally sold separately as they are not always a required replacement item.
How often should a marine carburetor be rebuilt?
Rebuild intervals depend on usage, fuel quality, and storage conditions (especially during winter). It is good practice to consider a rebuild every 3-5 years or if you notice any performance degradation. Ethanol-blended fuels can accelerate the deterioration of rubber components.
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.
Payment & Security
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