MerCruiser Seal – 8M0187157
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
MerCruiser Seal – 8M0187157
Keep your MerCruiser engine or sterndrive running leak-free with this genuine OEM seal. Precision-manufactured to factory tolerances, it restores proper fluid containment in the sealing surfaces where it was originally installed — no improvising, no aftermarket guesswork.
Key Features
- Genuine OEM part — exact factory replacement
- Marine-grade materials engineered to resist saltwater, fuel, and oil exposure
- Precision dimensions for a leak-free fit on first installation
- Maintains proper system pressure and prevents fluid contamination
Parts Desk Insights
Best use case: This seal is the right call any time you're disassembling a MerCruiser engine or drive component and need to restore the original sealing surface. Replacing seals during any teardown — rather than reusing the old one — is standard service practice and prevents comebacks. Confirm fitment against your engine or drive model and serial number before ordering.
Looking for related sealing components? Browse our full MerCruiser seal lineup:
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.