Carburetor Float Chamber Gasket – Fits Yamaha 9.9/15 HP Outboards (Replaces 63V-14984-00-00)
Carburetor Float Chamber Gasket – Fits Yamaha 9.9/15 HP Outboards (Replaces 63V-14984-00-00) 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 Carburetor Float Chamber Gasket provides a secure seal for the carburetor float bowl on Yamaha 9.9 HP and 15 HP 2-stroke outboard motors manufactured between 1984 and 2005, covering F, FM, FEM, MS, and MH series engines.
It serves as a direct replacement for Yamaha OEM part 63V-14984-00-00 and WSM part 600-70-02.
- Engineered for direct OEM-replacement fit.
- Constructed from marine-grade gasket material to resist fuel and heat.
- Ensures a reliable, leak-free seal to restore carburetor performance.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Yamaha | 63V-14984-00-00 |
| WSM | 600-70-02 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This part is designed for select Yamaha 2-stroke outboard models. Please verify your specific model and year range before ordering.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | 9.9F | 9.9 | 2-Stroke | 1984–2005 | 63V-14984-00-00 | |
| Yamaha | 9.9FM | 9.9 | 2-Stroke | 1984–2005 | 63V-14984-00-00 | |
| Yamaha | 9.9FEM | 9.9 | 2-Stroke | 1984–2005 | 63V-14984-00-00 | |
| Yamaha | 9.9MS | 9.9 | 2-Stroke | 1984–2005 | 63V-14984-00-00 | |
| Yamaha | 9.9MH | 9.9 | 2-Stroke | 1984–2005 | 63V-14984-00-00 | |
| Yamaha | E9.9DMH | 9.9 | 2-Stroke | 1984–2005 | 63V-14984-00-00 | |
| Yamaha | 13.5AW | 13.5 | 2-Stroke | 1984–2005 | 63V-14984-00-00 | |
| Yamaha | 15F | 15 | 2-Stroke | 1984–2005 | 63V-14984-00-00 | |
| Yamaha | 15FEM | 15 | 2-Stroke | 1984–2005 | 63V-14984-00-00 | |
| Yamaha | 15MSH | 15 | 2-Stroke | 1984–2005 | 63V-14984-00-00 | |
| Yamaha | 15FMH | 15 | 2-Stroke | 1984–2005 | 63V-14984-00-00 | |
| Yamaha | 15MH | 15 | 2-Stroke | 1984–2005 | 63V-14984-00-00 | |
| Yamaha | E15DMH | 15 | 2-Stroke | 1984–2005 | 63V-14984-00-00 |
Technical Specs
- Product Type
- Carburetor Float Chamber Gasket
- Installation
- Direct OEM replacement
- Fuel Type
- Gasoline
- Material
- Marine-grade gasket material
- Dimensions
- 12.0" x 8.0" x 0.2"
- Attributes
- Heat, fuel, and corrosion resistant
What’s in the Box
- 1 x Gasket, Float Chamber (63V-14984-00-00)
Installation Notes
- Before starting, disconnect the engine's battery and shut off the fuel supply.
- Carefully remove the airbox/silencer cover to access the carburetor.
- Disconnect the fuel lines and throttle linkage from the carburetor body.
- Unscrew the mounting bolts and remove the carburetor from the intake manifold.
- Place the carburetor on a clean workbench. Unscrew the float chamber bowl.
- Remove the old float chamber gasket and discard it. Thoroughly clean the mating surfaces of the bowl and carburetor body, ensuring no old material remains.
- Place the new gasket into the groove on the carburetor body.
- Re-install the float chamber bowl, tightening the screws evenly to create a secure seal. Do not overtighten.
- Re-mount the carburetor, reconnect all linkages and fuel lines, and reinstall the airbox.
- Reconnect the battery, open the fuel valve, and prime the system. Check carefully for any fuel leaks before starting the engine.
Troubleshooting & FAQ
How do I know if this gasket will fit my specific Yamaha engine?
This gasket is designed for Yamaha 9.9 HP and 15 HP 2-stroke outboards from approximately 1984–2005. The best way to ensure a match is to check the "Engine & Model Compatibility" table on this page and compare your engine's model number. Verifying the OEM part number 63V-14984-00-00 against your service manual is also recommended.
What are the signs of a failing float chamber gasket?
Common symptoms include visible fuel leaks around the carburetor bowl, a strong smell of gasoline, difficulty starting the engine, poor idling, or engine stumbling. A hardened, cracked, or shrunken gasket is unable to provide a proper seal.
How often should this gasket be replaced?
We recommend replacing the float chamber gasket any time the carburetor is disassembled for cleaning or service. As a preventative measure, it's good practice to inspect it annually and replace it if it shows any signs of wear, damage, or degradation.
Is this gasket resistant to modern ethanol-blended fuels?
Yes, it is made from modern, marine-grade gasket material formulated to be resistant to gasoline, oil, and the corrosive effects of ethanol blends (like E10) commonly found in marine fuel.
What's the difference between an OEM and an aftermarket part?
This listing is for an aftermarket replacement, not a genuine Yamaha (OEM) part. It has been engineered to meet or exceed OEM specifications using comparable high-quality materials. It is manufactured in an ISO 9002 certified facility and is batch-inspected to ensure quality and fitment, offering a reliable and cost-effective alternative.
How fast is shipping and what does it cost?
We ship worldwide quickly—typical transit time is 5–15 days. Standard shipping is free for most orders. Expedited shipping options and their costs will be displayed at checkout if available for your location.
What is your warranty and return policy?
This part is covered by a 1-year warranty against manufacturing defects under normal marine use. If you encounter an issue, please contact our support team with your order number. We accept returns for unused items in their original condition within our standard return window. Please see our full policy page or contact us for specific instructions.
Safety & Important Info
- Verify images and specifications against 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 quality control.
Payment & Security
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