Sierra Upper Unit Seal Kit (47-2648)
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
The Sierra 47-2648 Upper Unit Seal Kit is a complete replacement seal kit for the upper unit (intermediate housing) of marine outboard and sterndrive systems. Engineered to Sierra's marine-grade standards, this kit provides all the seals needed to restore a leak-free upper unit during service or rebuild — protecting internal components from water intrusion and oil loss at the driveshaft housing.
Key Features
- Complete upper unit seal kit — all seals included for a full intermediate housing reseal
- Sierra marine-grade materials rated for saltwater and freshwater environments
- Seals the driveshaft housing and upper gearcase interfaces to prevent oil loss and water entry
- Built to OEM specifications for proper fit and long-term sealing performance
- SKU: 47-2648
Best Use Case
This kit is the right choice when servicing or rebuilding the upper unit on a compatible outboard or sterndrive — particularly when oil seepage is detected at the driveshaft housing, or any time the upper unit is disassembled for inspection or repair. Replacing all seals as a complete set during any upper unit service is best practice and prevents repeat disassembly from a single missed seal.
Parts Desk Insights
Fitment varies by engine make, model, horsepower, and year — always verify compatibility against the Sierra application guide before ordering. For a complete drive service, pair this kit with the appropriate lower unit and transom seal kits for your application. Also in the Sierra seal kit lineup: Sierra 47-2586 Upper Unit Seal Kit, Sierra 47-2598 Lower Unit Seal Kit, Sierra 47-2623 Johnson/Evinrude Lower Unit Seal Kit, Sierra 47-2652 MerCruiser Lower Unit Seal Kit, Sierra 47-27721 Transom Seal Kit, Sierra 47-8205 Transom Seal Kit, and Sierra 47-82061 Transom Seal Kit.
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.