Mercury MerCruiser Gasket 8M0204692
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Ensure proper sealing of the gearcase drain and vent screws with the Mercury MerCruiser Gasket 8M0204692. This genuine Mercury Marine OEM gasket is designed to create a watertight seal between the gearcase drain or vent screw and the gearcase housing during gear lube service.
The gasket compresses when the screw is tightened, preventing gear oil leaks while protecting the gearcase from water intrusion. Using OEM Mercury sealing components ensures correct fitment, proper compression, and reliable sealing performance in harsh marine environments.
Key Features
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Genuine Mercury Marine OEM gearcase gasket
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Designed for gearcase drain and vent screw sealing
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Helps prevent gear oil leaks and water intrusion
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Corrosion-resistant design for marine environments
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Ensures proper sealing during gear lube service
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Direct replacement for original Mercury sealing gaskets
Part Details
OEM Part Number: 8M0204692
Mercury Reference Number: 26-8M0204692
Product Type: Gearcase drain screw gasket / sealing washer
Material: Sealing gasket material designed for marine gearcase applications
Application: Gearcase drain and vent screw sealing gasket
Typical Packaging: Individual gasket or sold in service packs
Compatible Mercury & MerCruiser Engines
Used on many gearcases with standard drain and vent screws, including:
Mercury Outboards
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Mercury 2.5HP – 400HP outboards
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Mercury Two-Stroke outboards
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Mercury FourStroke outboards
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Mercury Pro XS outboards
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Mercury Verado outboards
MerCruiser Sterndrives
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Alpha One
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Alpha One Gen II
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Bravo One
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Bravo Two
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Bravo Three
Function
The gearcase gasket installs under the drain or vent screw to provide a proper seal after gear lube service. Maintaining a tight seal is critical to keep gear oil inside the gearcase and prevent water contamination.
Replacing worn gaskets helps:
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Prevent gear oil leaks
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Stop water intrusion into the gearcase
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Maintain proper lubrication of internal gears
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Protect sterndrive and gearcase components from corrosion
Important Compatibility Note
Gearcase drain screw gaskets may vary depending on gearcase design, screw size, and engine production year. Always verify compatibility using the engine or sterndrive serial number before ordering to ensure the correct gasket.
Cross-Stock / Reference Part Numbers
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Mercury Reference Number: 26-8M0204692
Shipping: Ships same or next day for fast Canada wide shipping. ⚓
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.