Water Cover Gasket – Fits OMC (Replaces OMC 308592)
Water Cover Gasket – Fits OMC (Replaces OMC 308592) 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.).
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Water Cover Gasket – Fits OMC (Replaces OMC 308592)
Product Details
This aftermarket Water Cover Gasket is designed as a direct replacement for OMC marine engines requiring part number 308592. It creates a secure seal for the water cover, ensuring optimal cooling system performance and preventing leaks. Engineered for durability, it provides a reliable fit for compatible models.
It serves as a direct cross-reference for OMC 308592, Generic Jkbross_1000297, and CP Performance 602-95-105-10.
- Easy Installation: Designed for a straightforward fit without the need for specialized tools.
- Durable Construction: Made from robust materials to withstand the harsh marine environment.
- Complete Kit: Includes one gasket, ensuring you have the necessary component for replacement.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket brands.
| Brand | Part Number |
|---|---|
| OMC | 308592 |
| Generic | Jkbross_1000297 |
| CP Performance | 602-95-105-10 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
Compatibility for this part is primarily verified by the OEM part number. Please check your engine's service manual or existing part to confirm 308592 is the correct reference for your specific model and year, as detailed fitment data is not available.
Technical Specs
- Product Type
- Gasket
- Installation
- Easy fit, minimal effort, no specialized tools needed
- Dimensions
- 16.0" L x 7.0" W x 0.4" H
- Other Technical Attributes
- Universal, Durable
- Warranty
- Amazon.com Voluntary 30-Day Return Guarantee
What’s in the Box
- 1 x Water Cover Gasket (Replaces OMC 308592)
Installation Notes
- Disconnect the battery and ensure the engine is cool before starting work.
- Drain the cooling system to a level below the water cover.
- Remove the bolts securing the water cover plate. Keep track of their order if they are different lengths.
- Carefully pry the cover off. Avoid gouging the mating surfaces.
- Remove the old gasket and thoroughly clean both the engine block and cover plate surfaces. Ensure they are free of old gasket material, sealant, and corrosion.
- Position the new gasket correctly on the engine block.
- Reinstall the water cover and tighten the bolts in a crisscross pattern to the manufacturer's recommended torque specifications to ensure even pressure.
- Refill the cooling system and check for leaks before starting the engine.
Troubleshooting & FAQ
How do I confirm this gasket fits my specific OMC engine?
The most reliable way is to verify the part number. Check your engine's service manual or the old gasket for the number 308592. If it matches, this part is the correct replacement.
What are the common signs of a failing water cover gasket?
Symptoms include visible water leaks around the cover plate (especially when the engine is running), engine overheating due to loss of coolant, and milky or contaminated engine oil if the leak is internal.
Can I reuse my old bolts with this new gasket?
Yes, you can typically reuse the original bolts, provided they are clean and in good condition. Ensure you tighten them to the proper torque specifications recommended by your engine's manufacturer.
Do I need to use any sealant with this gasket?
This gasket is designed to be installed dry. Applying sealant is generally not necessary or recommended unless explicitly specified in your engine's service manual for your particular application.
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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