Carburetor Service Kit – Fits Mercury/Mariner 50-150 HP (Replaces 1395-48401)
Carburetor Service Kit – Fits Mercury/Mariner 50-150 HP (Replaces 1395-48401) 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 Service Kit provides the necessary components to rebuild and restore carburetors on Mercury/Mariner 50-150 HP, 4-cylinder and 6-cylinder engines. It is designed specifically for models equipped with WMK and KD series carburetors, ensuring a precise fit and reliable fuel system performance.
It serves as a direct replacement for multiple part numbers, including Mercury 1395-48401, Mercury 1395-4808-1, Sierra 18-7003, and GLM 40401.
- Installs as a direct, OEM-fitment replacement.
- Designed for use with gasoline fuel systems.
- Includes all standard components for a full carburetor service.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket suppliers.
| Brand | Part Number | Notes |
|---|---|---|
| Mercury | 1395-48401 | |
| Mercury | 1395-4808-1 | |
| Sierra | 18-7003 | |
| GLM | 40401 | |
| OMC/Johnson/Evinrude | 0508444 | Cross-reference only; compatibility not confirmed |
| OMC/Johnson/Evinrude | 0508446 | Cross-reference only; compatibility not confirmed |
| OMC/Johnson/Evinrude | 0508447 | Cross-reference only; compatibility not confirmed |
| OMC/Johnson/Evinrude | 0508448 | Cross-reference only; compatibility not confirmed |
Engine & Model Compatibility
Confirm your engine model and carburetor series in the table below.
This kit is confirmed to fit the specified Mercury/Mariner models. Year ranges are not available; verify fitment using your engine's model and OEM part number.
| Brand | Model | Rated HP | Stroke | OEM Part No. |
|---|---|---|---|---|
| Mercury/Mariner | WMK-8 | 50 | 4-cylinder | 1395-48401 |
| Mercury/Mariner | KD-4A | 80 | 4-cylinder | 1395-48401 |
| Mercury/Mariner | WMK-4, WMK-16, WMK-17 | 85 | 4-cylinder | 1395-48401 |
| Mercury/Mariner | WMK-23, WMK-27, WMK-30, WMK-35, WMK-39 | 90 | 6-cylinder | 1395-48401 |
| Mercury/Mariner | KD-1A, KD-1B, KD-2A, KD-3A | 100 | 6-cylinder | 1395-48401 |
| Mercury/Mariner | KD-6A, KD-6B | 115 | 6-cylinder | 1395-48401 |
| Mercury/Mariner | WMK-3, WMK-10, WMK-15, WMK-18, WMK-26, WMK-28, WMK-32, WMK-36, WMK-40, WMK-41 | 115 | 6-cylinder | 1395-48401 |
| Mercury/Mariner | KD-1A, KD-1B, KD-2A, KD-3A | 125 | 6-cylinder | 1395-48401 |
| Mercury/Mariner | KD-7A, KD-7B | 135 | 6-cylinder | 1395-48401 |
| Mercury/Mariner | WMK-4 | 135 | 6-cylinder | 1395-48401 |
| Mercury/Mariner | WMK-7, WMK-9, WMK-25, WMK-29 | 140 | 6-cylinder | 1395-48401 |
| Mercury/Mariner | WMK-7, WMK-9, WMK-25, WMK-29 | 150 | 6-cylinder | 1395-48401 |
Technical Specs
- Product Type
- Carburetor Service Kit
- Installation
- Direct replacement
- Fuel Type
- Gasoline
- Connection
- OEM fitment
- Dimensions
- 7.13" x 6.0" x 0.13"
- Fitment
- For WMK and KD series carburetors
What’s in the Box
- 1 x Carburetor Service Kit (Replaces 1395-48401)
Installation Notes
- Disconnect the battery and shut off the fuel supply to the engine.
- Carefully remove the airbox or flame arrestor to access the carburetor.
- Note the linkage and fuel line connections, then remove the carburetor from the intake manifold.
- Disassemble the carburetor on a clean workbench, keeping track of all small parts.
- Thoroughly clean all metal components with a quality carburetor cleaner. Do not spray cleaner on rubber or plastic parts.
- Carefully remove old gaskets, seals, and needle valves.
- Install the new components from the kit, ensuring each part is seated correctly.
- Reassemble the carburetor, making sure all screws are tightened to the proper torque specifications.
- Reinstall the carburetor onto the engine, reconnecting linkages and fuel lines.
- Start the engine and adjust idle speed and mixture screws according to your engine's service manual for optimal performance.
Troubleshooting & FAQ
How do I know if this carburettor kit will fit my engine?
This kit is designed for Mercury/Mariner 50-150 HP engines with WMK and KD series carburetors. The best way to confirm fitment is to match your engine's model and original carburetor part number to the information in the compatibility tables. Visually comparing your old parts to the product images can also help.
What are the signs of a failing carburetor that this kit can fix?
Common symptoms include difficulty starting, rough idling, stalling, poor acceleration, black smoke from the exhaust (running rich), or fuel leaks. This service kit replaces the common wear items (gaskets, seals, needle valve) that are often the cause of these issues.
Is this kit for both 4-cylinder and 6-cylinder engines?
Yes, this kit services carburetors used on a range of both 4-cylinder (50-85 HP) and 6-cylinder (90-150 HP) Mercury/Mariner outboard engines as specified in the compatibility list.
How often should a carburetor be rebuilt?
There is no fixed interval. A rebuild is recommended when you notice performance issues or during a major engine overhaul. Factors like fuel quality, ethanol content, and storage conditions can affect the lifespan of carburetor 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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