Volvo Penta MS3 Reverse Gear Gasket 853939
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
The Volvo Penta 853939 is a genuine OEM reverse gear / transmission housing gasket used on select Volvo Penta MS3-series marine gearboxes. This thin mating gasket seals gearbox housing and cover surfaces in the mechanical shifting / top-end area of the transmission, helping prevent oil seepage and keeping the reverse gear assembly properly sealed after service or disassembly.
Key Features
- Genuine Volvo Penta OEM reverse gear gasket
- Volvo Penta part number: 853939
- Thin paper / fiber-style mating gasket for transmission housing service
- Used on select Volvo Penta MS3-series reverse gears
- Helps seal gearbox cover and housing mating surfaces
- Commonly serviced during reverse gear inspection, top-cover removal, or gasket overhaul work
- Should be replaced whenever the sealed housing joint is opened
Application Compatibility
Common Volvo Penta reverse gear applications for gasket 853939 include:
Volvo Penta MS3-Series Reverse Gears
- MS3
- MS3B
- MS3C
This gasket is commonly associated with older Volvo Penta inboard and classic marine transmission applications where the MS3-series reverse gear parts diagram calls for part number 853939.
Fitment Notice
Confirm fitment by Volvo Penta reverse gear model, transmission serial details, and the correct MS3 / MS3B / MS3C parts diagram. Older Volvo Penta gearboxes can use several similar-looking gaskets depending on the exact cover, housing, and transmission version, so match by part number and diagram location before ordering.
When This Part Needs Replacement
Replace this gasket whenever the related transmission cover or housing section is removed. It should also be replaced if there is oil seepage around the reverse gear housing joint, if the gasket is torn during disassembly, or if the old gasket has become compressed, brittle, oil-soaked, or stuck to the mating surfaces.
Installation Notes
Clean both mating surfaces carefully before installation and remove all old gasket material without gouging the housing. Check the cover surface for warping, corrosion, or nicks that could prevent proper sealing. Use the Volvo Penta service procedure for final assembly and fastener tightening. When servicing an older MS3-series gearbox, inspect nearby selector components, O-rings, seals, and cover hardware while the transmission is open.
Alternate/Superseded Part Numbers
- Current Volvo Penta Part Number: 853939
- Related Volvo Penta Gasket Kit References: 876400, 875628
- Application Reference: Volvo Penta MS3, MS3B, and MS3C reverse gear service
Parts Desk Insight
The MS3 reverse gear is an older Volvo Penta transmission family, so gasket matching should be done by the gearbox diagram rather than by shape alone. Replacing the gasket during cover removal helps avoid repeat leaks and protects the transmission from oil loss after service.
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.