Mercury MerCruiser Gasket 8M0090319
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Mercury MerCruiser Gasket – 8M0090319
Maintain proper cooling system sealing with the Mercury MerCruiser Gasket 8M0090319. This genuine Mercury OEM gasket is used in water pump assemblies to create a tight seal between the pump housing components and prevent cooling water leaks.
Designed to Mercury Marine specifications, this gasket ensures proper sealing when servicing or replacing the water pump impeller. Replacing the gasket during water pump maintenance helps maintain proper cooling water pressure and prevents overheating issues.
Key Features
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Genuine Mercury Marine OEM water pump gasket
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Provides a reliable seal for water pump housing assemblies
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Helps maintain proper cooling water pressure
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Recommended replacement during water pump impeller service
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Marine-grade composite material designed for heat and moisture resistance
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Direct replacement for original Mercury components
Part Details
OEM Part Number: 8M0090319
Mercury Reference Number: 27-8M0090319
Supersedes: 27-85608-1
Product Type: Water pump gasket
Application: Outboard and sterndrive water pump assemblies
Compatible Mercury & MerCruiser Engines
Commonly used with Mercury and Mariner two-stroke outboards and select MerCruiser sterndrives, including engines such as:
Mercury / Mariner Two-Stroke Outboards
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Mercury 90HP
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Mercury 100HP
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Mercury 115HP
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Mercury 135HP
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Mercury 150HP
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Mercury 175HP
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Mercury 200HP
MerCruiser Sterndrive Applications
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Select MerCruiser sterndrives using this water pump gasket design
This gasket is typically used when servicing the gearcase water pump or replacing the impeller in these engines.
Function
The water pump gasket seals the joint between the water pump housing and the gearcase components. A proper seal allows the pump to maintain correct water pressure and circulate cooling water through the engine.
Replacing worn gaskets helps:
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Prevent cooling water leaks
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Maintain proper cooling system pressure
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Improve water pump efficiency
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Protect the engine from overheating
Important Compatibility Note
Water pump components can vary depending on engine model, gearcase design, and serial number range. Always verify compatibility using the engine model and serial number before ordering to ensure the correct replacement gasket.
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.