Carburetor Gasket – Fits Yamaha 40-55HP 2-Stroke Outboards (Replaces 663-14483-A0-00)
Carburetor Gasket – Fits Yamaha 40-55HP 2-Stroke Outboards (Replaces 663-14483-A0-00) 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 replacement Carburetor Gasket – Fits Yamaha 40-55HP 2-Stroke Outboards (Replaces 663-14483-A0-00) provides a perfect seal for select Yamaha 2-Stroke outboards. It is designed for 40HP E40X/XMH and 55HP 55B/BE/BET models produced from 1989 to 1994, ensuring reliable carburetor performance.
This part is a direct interchange for Yamaha OEM part numbers 663-14483-A0-00 and its predecessor, 663-14483-00-00.
- Engineered for a direct, hassle-free installation.
- Constructed to provide an optimal seal between carburetor components.
- Designed to resist degradation from marine fuels and engine heat.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Superseded By |
|---|---|---|
| Yamaha | 663-14483-00-00 | 663-14483-A0-00 |
| Yamaha | 663-14483-A0-00 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
The following table lists compatible Yamaha engines. It is critical to confirm your engine's specific model, horsepower, and year to ensure correct part fitment.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. |
|---|---|---|---|---|---|
| Yamaha | E40CMH | 40 | 2-Stroke | 663-14483-A0-00 | |
| Yamaha | 55B | 55 | 2-Stroke | 1990–1994 | 663-14483-A0-00 |
| Yamaha | 55BE | 55 | 2-Stroke | 1991 | 663-14483-A0-00 |
| Yamaha | 55BET | 55 | 2-Stroke | 663-14483-A0-00 | |
| Yamaha | E55CMH | 55 | 2-Stroke | 663-14483-A0-00 | |
| Yamaha | CV55ELF | 55 | 2-Stroke | 1989 | 663-14483-A0-00 |
| Yamaha | CV55ELD | 55 | 2-Stroke | 1990 | 663-14483-A0-00 |
| Yamaha | C55ELRP | 55 | 2-Stroke | 1991 | 663-14483-A0-00 |
Technical Specs
- Product Type
- Carburetor Gasket
- Installation
- Direct replacement
- Weight
- 0.03 kg (0.07 lb)
- Dimensions
- 27.5 cm L x 8.0 cm W x 0.2 cm H
- Other Attributes
- Designed for optimal sealing between carburetor components
What’s in the Box
- 1 x Gasket (663-14483-A0-00)
Installation Notes
- Disconnect the battery and turn off the fuel supply before beginning work.
- Remove the engine cowling to access the carburetor.
- Carefully note and disconnect any fuel lines, vacuum hoses, and throttle/choke linkages attached to the carburetor.
- Unscrew the mounting bolts holding the carburetor to the intake manifold.
- Remove the old, worn gasket and thoroughly clean both mating surfaces of any residue. Ensure they are clean and dry.
- Position the new gasket correctly onto the intake manifold.
- Re-install the carburetor, ensuring it is properly aligned, and tighten the mounting bolts to the manufacturer's recommended torque specifications.
- Reconnect all fuel lines, hoses, and mechanical linkages.
- Turn the fuel supply back on and prime the system if necessary. Check carefully for any fuel leaks.
- Reconnect the battery, start the engine, and allow it to warm up. Check for smooth operation and make any necessary idle adjustments.
Troubleshooting & FAQ
How do I know if this gasket will fit my specific outboard model?
The most reliable method is to match your engine's model number and year against the compatibility list provided. Visually comparing your old gasket to the product photos can also help confirm the correct shape and bolt pattern.
What are the typical signs of a failed carburetor gasket?
A faulty carburetor gasket can cause several issues, including fuel leaks around the carburetor body, a rough or unstable idle, engine stalling, backfiring, or difficulty starting. Any air leak at the base will lead to a lean fuel/air mixture.
How often should this gasket be replaced?
This gasket should be replaced whenever the carburetor is removed for cleaning, rebuilding, or any other service. It is not a scheduled maintenance item but a component that ensures a proper seal upon reassembly.
Is this gasket resistant to ethanol-blended fuels?
Yes, this gasket is manufactured from modern composite materials designed to be fully compatible with today's marine fuels, including those containing up to 10% ethanol (E10).
Can I reuse my old gasket?
No. Gaskets compress to create a seal and are considered one-time-use parts. Reusing an old gasket will likely result in fuel or air leaks, leading to poor engine performance and potential safety hazards.
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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