Mercury MerCruiser Seal 8M0033407
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You have 30 days to request a return. All sale items are final sale.
Maintain proper sealing and drivetrain protection with the Mercury MerCruiser Seal 8M0033407. This genuine Mercury Marine OEM propeller shaft seal is designed to prevent water intrusion and maintain proper lubrication within the sterndrive or pod drive system.
The seal installs around the propeller shaft and creates a tight barrier that keeps gear oil inside the drive while preventing water from entering the drivetrain. Using an OEM Mercury seal ensures precise fitment and long-lasting durability in high-pressure marine propulsion systems.
Key Features
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Genuine Mercury Marine OEM propeller shaft seal
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Designed to prevent water intrusion into the drive system
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Maintains proper lubrication around the propeller shaft
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Durable marine-grade sealing materials
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Engineered for high-load propulsion systems
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Direct replacement for original Mercury shaft seals
Part Details
OEM Part Number: 8M0033407
Mercury Reference Number: 26-8M0033407
Product Type: Propeller shaft oil seal
Application: Propeller shaft sealing in sterndrive or pod drive systems
Seal Type: Marine propeller shaft seal
Typical Packaging: Individual shaft seal
Compatible MerCruiser Drives
Commonly used on select MerCruiser propulsion systems including:
MerCruiser Sterndrives
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Bravo Three
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Bravo X One
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Bravo Two
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Bravo Four S
MerCruiser Pod Drives
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Zeus 3000 pod drive systems
These propulsion systems are commonly used on high-performance cruisers, offshore boats, and larger vessels equipped with Bravo sterndrives or Zeus pod drives.
Function
The propeller shaft seal creates a watertight barrier around the shaft where it exits the drive housing. This seal keeps lubricant inside the drive while preventing water from entering critical drivetrain components.
Replacing a worn shaft seal helps:
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Prevent water intrusion into the drive housing
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Maintain proper lubrication of gears and bearings
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Protect internal drivetrain components
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Prevent costly sterndrive or pod drive damage
Important Compatibility Note
Propeller shaft seals vary depending on drive model, gear housing design, and serial number range. Always verify compatibility using the sterndrive or pod drive serial number before ordering to ensure the correct seal.
Cross-Stock / Superseded Part Numbers
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Mercury Reference Number: 26-8M0033407
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Earlier Mercury cross references: 861695, 805077
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.