Carburetor Repair Kit – Fits Mercury Marine 30-70 HP Engines (Replaces 338886, 0302984)
Carburetor Repair Kit – Fits Mercury Marine 30-70 HP Engines (Replaces 338886, 0302984) is backordered and will ship as soon as it is back in stock.
Couldn't load pickup availability
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
Carburetor Repair Kit – Fits Mercury Marine 30-70 HP Engines (Repla...
Product Details
This Carburetor Repair Kit is designed for Mercury Marine outboard engines from 30 to 70 HP, covering models made between 1970 and 2000. It provides all necessary components for a complete carburetor overhaul and restoration to ensure optimal fuel delivery and engine performance.
It serves as a direct aftermarket replacement for multiple OEM part numbers, including Mercury 338886, 0302984, 0396514, 0302994, and 0331203.
- Designed for direct-fit installation, matching OEM specifications.
- Compatible with standard gasoline fuel systems.
- Includes essential gaskets, seals, and float assembly for a comprehensive repair.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Mercury | 338886 |
| Mercury | 0302984 |
| Mercury | 0396514 |
| Mercury | 0302994 |
| Mercury | 0331203 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
| Brand | Rated HP | Years | OEM Part No. |
|---|---|---|---|
| Mercury Marine | 30–70 HP | 1970–2000 | 338886/0302984 |
Technical Specs
- Product Type
- Carburetor Repair Kit
- Installation
- Direct replacement
- Fuel Type
- Gasoline
- Product Dimensions
- 5.13 in x 4.0 in x 0.13 in (H x W x L)
- Component Dimensions
- Float and Arm Assembly Length: 57.1 mm (2.25 in)
What’s in the Box
- 1 x Float Valve Spring Clip (0336842)
- 1 x Needle & Seat Set (802119A1 & 0396552)
- 1 x Fiber Washer (0303630)
- 1 x Gasket (0331181 & 0302984)
- 1 x Transfer Tube O-Ring
- 1 x Float (0396514)
- 1 x Float Bowl Gasket (0302994, 0331203, 338886)
- 3 x Mounting Gaskets (0303437 & 0303003)
- 2 x Core Plugs (020310 & 0307542)
Installation Notes
- Disconnect the battery and ensure the engine is cool before starting.
- Shut off the fuel supply and safely disconnect the fuel lines from the carburetor.
- Carefully remove the carburetor from the engine manifold.
- Disassemble the carburetor in a clean, well-lit area, taking photos or notes of component locations.
- Clean all metal parts with a suitable carburetor cleaner. Do not use cleaner on non-metal parts like gaskets or O-rings.
- Inspect the old components for wear, comparing them to the new parts in the kit.
- Install the new needle, seat, gaskets, float, and other components from the kit.
- Set the float to the manufacturer's specified height, which is critical for proper function.
- Reassemble the carburetor, ensuring all screws are tightened to the correct torque specifications.
- Reinstall the carburetor onto the engine and securely reconnect all fuel lines and linkages.
- Turn on the fuel supply and check thoroughly for leaks before attempting to start the engine.
- Once started, adjust the idle speed and mixture screws as needed for smooth operation.
Troubleshooting & FAQ
How do I know if my carburetor needs a rebuild?
Common signs include difficulty starting, rough idling, stalling at low speeds, poor acceleration, flooding, or black smoke from the exhaust. A visual inspection may also reveal fuel leaks or corroded components.
Will this kit fit any Mercury engine between 30-70 HP from 1970-2000?
This kit is designed for a wide range of Mercury engines in that category, but variations may exist. Always verify the OEM part numbers (e.g., 338886, 0302984) from your service manual or existing parts before ordering to ensure a perfect match.
What is the most common cause of carburetor failure after a rebuild?
Often, issues arise from an incorrect float height adjustment, debris entering the system during assembly, or reusing old gaskets that are not in the kit. Always work in a clean environment and ensure all carburetor passages are clear of obstructions.
Do I need special tools for this installation?
Basic hand tools like screwdrivers and wrenches are required. A float gauge is highly recommended for accurately setting the float height. Compressed air can also be very useful for cleaning small passages within the carburetor body.
What is the difference between an OEM and an aftermarket carburetor kit?
This listing is an aftermarket replacement (not OEM). It is built to OEM-level specifications with comparable materials and manufactured in an ISO 9002 facility, with batch inspections for consistency.
What are your shipping speed and cost?
We ship worldwide quickly—typical transit is 5–15 days. Standard shipping is free, and expedited options appear at checkout where available.
What is the warranty and return policy?
This kit is 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 for unused items 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
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
