Volvo Penta Propeller Shaft Oil Seal 3863090
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Volvo Penta 3863090 is an oil seal used in supported Volvo Penta lower gearhousing assemblies. Parts diagram references show this seal in the SX-A / marine propulsion lower gearhousing group at schematic key #15, positioned with related components such as the bearing carrier, O-ring, shims, water inlet, and gasket kit. It is commonly described as a propeller shaft / bearing housing oil seal for compatible Volvo Penta sterndrive applications.
Key Features
- Volvo Penta lower gearhousing oil seal
- Used at the propeller shaft / bearing housing seal location in supported applications
- Helps retain gear oil and reduce water or debris intrusion at the shaft sealing area
- Volvo Penta part number: 3863090
- Common weight references: approximately 0.025–0.06 lb
- Aftermarket dimensional reference: approximately 44.5 mm O.D. x 30 mm I.D. x 7 mm width
- Replaces earlier Volvo Penta references 3853474 and 3858303 where supported
Engine Compatibility
This seal is primarily drive and lower-gearhousing specific, not engine-displacement specific. Application references list use with Volvo Penta SX-A, SX-C, SX-R, SX-M, SX-S, plus supported DPS-A, DPS-B, DPS-D, FWD-B, FWD-D, and related TSK transom / sterndrive configurations depending on exact model and serial number.
Serial Number Fitment Notice
Seal fitment depends on the exact Volvo Penta drive model, lower gearhousing, bearing carrier, propeller shaft arrangement, and serial number range. Always confirm compatibility using the Volvo Penta drive serial number and parts diagram before ordering, especially when replacing earlier references 3853474 or 3858303.
When This Part Needs Replacement
Replace this seal if there is gear oil leakage, water intrusion into the gearcase, fishing line damage around the prop shaft, hardened or torn seal lips, corrosion around the seal bore, or seal damage during bearing carrier service. A failing prop shaft oil seal can lead to contaminated gear oil and lower-unit damage if not corrected.
Installation Notes
Inspect the propeller shaft surface, bearing carrier, seal bore, O-rings, shims, and gear oil condition before installation. Press the seal in squarely and to the correct position for the specific lower gearhousing. If gear oil appears milky or water-contaminated, pressure/vacuum testing the drive after seal replacement is recommended before returning the boat to service.
Alternate/Superseded Part Numbers
- 3863090
- Volvo Penta 3863090
- VP3863090
- VOLVO-3863090
- 3853474
- 3858303
- BRP / OMC 3863090
- GLM 85900
- REC3863090
Parts Desk Insight
This seal is best matched by the lower gearhousing diagram, not by engine size. If the prop shaft seal is being replaced because of water in the gear oil, it is worth checking the prop shaft surface, bearing carrier, and related O-rings at the same time so the leak does not come back after reassembly.
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.