Float Bowl Gasket – Fits Johnson/Evinrude Outboards (Replaces OMC 338882)
Float Bowl Gasket – Fits Johnson/Evinrude Outboards (Replaces OMC 338882) 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).
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Float Bowl Gasket – Fits Johnson/Evinrude Outboards (Replaces OMC 3...
Product Details
This Float Bowl Gasket – Fits Johnson/Evinrude Outboards is a crucial component for maintaining a leak-free seal on the carburetor float bowl assembly. It is designed for a wide range of carbureted OMC, Johnson, and Evinrude outboard models manufactured from the 1960s through the 1990s, ensuring reliable fuel system performance.
It serves as a direct replacement for OEM part numbers OMC 338882, 0338882, and 777773, and interchanges with Sierra Marine 18-2579 and GLM 37800.
- Engineered for direct, hassle-free installation.
- Specifically designed for the OMC carburetor float bowl assembly.
- Resistant to gasoline and engine compartment conditions.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| OMC | 338882 |
| OMC | 0338882 |
| OMC | 777773 |
| Sierra Marine | 18-2579 |
| GLM | 37800 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
OMC/Johnson/Evinrude: This gasket fits numerous outboard models equipped with carbureted engines. The table below lists confirmed applications based on available data. Always verify your specific part number before ordering.
| Brand | Model | Rated HP | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|
| Johnson | J25RVL3SIE | 25 | 2001 | 338882 | Rope start, tiller, 20" shaft, white |
Technical Specs
- Product Type
- Carburetor Float Bowl Gasket
- Installation
- Direct replacement
- Fuel Type
- Gasoline
- Dimensions
- 7.13" H x 6.0" W x 1.06" L
- Weight
- 0.0200 lb (0.0091 kg)
- Warranty
- Standard manufacturer warranty
- Other Technical Attributes
- Designed for OMC carburetor float bowl assembly
What’s in the Box
- 1 x Float Bowl Gasket (338882/0338882/777773)
Installation Notes
- Ensure the engine is off and cool. Disconnect the battery and fuel line.
- Place a rag under the carburetor to catch any spilled fuel.
- Carefully remove the screws securing the float bowl to the carburetor body.
- Gently detach the float bowl and remove the old gasket. Clean the mating surfaces of both the bowl and the carburetor body, ensuring they are free of old gasket material and debris.
- Position the new gasket in the groove of the float bowl or on the carburetor body.
- Reinstall the float bowl, ensuring the gasket is seated correctly. Tighten the screws evenly in a crisscross pattern to the manufacturer's recommended torque.
- Reconnect the fuel line and battery. Prime the fuel system and check for any leaks around the float bowl before starting the engine.
Troubleshooting & FAQ
How do I know if this gasket fits my engine?
The best way to confirm fitment is by matching your existing part number to one of the OEM or aftermarket cross-references listed in the Part Number Matrix. While it fits many Johnson/Evinrude models, checking the number is essential.
What are common signs of a failing float bowl gasket?
Symptoms include visible fuel leakage from the carburetor, a strong smell of gasoline around the engine, difficulty starting, rough idling, or stalling. These issues occur because a bad seal disrupts the fuel-air mixture.
Can I reuse my old gasket after cleaning the carburetor?
No. Gaskets are single-use components that compress and deform to create a seal. Reusing an old gasket will likely result in fuel leaks and poor engine performance. Always install a new one whenever the float bowl is removed.
What is the recommended replacement interval for this gasket?
There is no fixed interval. The gasket should be replaced whenever the carburetor is serviced or if signs of leakage or deterioration appear. It's good practice to have a spare on hand for routine maintenance.
Is any sealant required with this gasket?
No, this gasket is designed to create a seal on its own. Applying sealant can cause it to swell or degrade, and excess sealant can break off and clog carburetor passages, leading to engine problems.
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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