Gasket – Fits Outboard Marine Corp (Replaces 313763)
Gasket – Fits Outboard Marine Corp (Replaces 313763) 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
Gasket – Fits Outboard Marine Corp (Replaces 313763)
Product Details
This aftermarket Gasket – Fits Outboard Marine Corp (Replaces 313763) is engineered for specific OMC powerhead adapters used in Johnson and Evinrude outboard engines. It is designed to create a reliable seal, replacing the original OEM component.
This part serves as a direct cross-reference for numbers from Brp Us Inc (313763), Textron Inc (313763), and Zf Industrieantriebe Witten Gmbh (313763).
- Constructed from durable, heat-resistant composite material for a lasting seal.
- Precision-cut to match OEM specifications for a direct fit.
- Designed for use on Johnson and Evinrude OMC Powerhead Adapters.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Outboard Marine Corp | 313763 |
| Johnson Evinrude OMC | 0313763 |
| Brp Us Inc | 313763 |
| Textron Inc | 313763 |
| Zf Industrieantriebe Witten Gmbh | 313763 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This gasket is listed for Johnson Evinrude OMC applications. Please verify your specific model requires part number 313763 or 0313763.
| Brand | Model | OEM Part No. | Notes |
|---|---|---|---|
| Johnson Evinrude OMC | Powerhead Adapter | 313763 / 0313763 | Gasket for Outboard Marine Corp and related brands. |
Technical Specs
- Product Type
- Gasket
- Housing Material
- ASBESTOS OVERALL
- Dimensions (Product)
- 10.0" H x 13.0" W x 0.25" L
- Cross-sectional thickness
- 0.71 mm (0.028 inches) minimum and 0.91 mm (0.036 inches) maximum
- Aperture Width
- 27.00 mm (1.063 inches) nominal
- Aperture Length
- 61.16 mm (2.406 inches) nominal
- Outside Corner Radius
- 5.54 mm (0.218 inches) nominal
- Hole Diameter
- 5.94 mm (0.234 inches) nominal
- Cross-Sectional Shape
- SOLID SINGLE OR COMPOSITION
What’s in the Box
- 1 x Gasket (313763)
Installation Notes
- Ensure the engine is off, cool to the touch, and the battery is disconnected for safety.
- Carefully access and remove the components covering the old powerhead adapter gasket.
- Thoroughly clean both mating surfaces, ensuring all old gasket material, debris, and oil are removed.
- Inspect the cleaned surfaces for any warping, cracks, or deep scratches that could prevent a proper seal.
- Carefully position the new gasket. It is typically installed dry; do not use sealant unless explicitly required by your engine's service manual.
- Reassemble the components, tightening all fasteners to the manufacturer's specified torque in the recommended sequence.
- Reconnect the battery, start the engine, and carefully inspect for any leaks around the newly installed gasket.
Troubleshooting & FAQ
How do I know if this gasket fits my engine?
Check the Part Number Matrix and Engine Compatibility table. It is crucial to match your engine's model and OEM part number (313763 or 0313763). When in doubt, always compare the gasket's image and specifications to your old part before installation.
What are the signs of a failing powerhead adapter gasket?
Common signs include water or oil leaks around the adapter area, engine overheating, a noticeable loss of power, or visible corrosion and physical damage to the existing gasket.
Do I need to use gasket sealant with this part?
Generally, this type of gasket is designed for a dry fit. Using sealant can sometimes cause it to slip out of place or fail prematurely. Always follow the specific recommendations in your engine's official service manual.
What is this gasket made of?
The gasket is made from a material specified as "ASBESTOS OVERALL," chosen for its sealing and heat-resistant properties. Handle and dispose of this material according to local regulations and safety best practices to avoid inhaling dust.
Why aren't specific years listed for compatibility?
This part often fits a wide range of OMC models where the powerhead adapter design was consistent over many years. Because of this, verification should be done by matching the part number (313763) rather than relying on the model year alone.
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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