Gimbal Bearing Oil Seal – Fits Volvo Penta SX/DP & OMC Cobra Drives
This gimbal bearing oil seal is designed for a direct fit on a range of Volvo Penta and OMC stern drives. It is compatible with Volvo Penta SX, SX-C, SX-M, SX-R, SX-S, and DP-SM drive models. It also fits OMC Stern Drives on engines from 2.3L to 8.2L.
This component serves as a direct replacement for multiple OEM part numbers, ensuring a reliable seal to protect the gimbal bearing from water intrusion.
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Installation Method: Installs via a standard press-fit into the gimbal housing.
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Material: Constructed from durable rubber with metal reinforcement for a secure seal.
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Package Contents: Includes two oil seals for a complete service.
Part Number Cross-Reference
Use this table to confirm equivalent part numbers across OEM and aftermarket brands.
| Brand |
Part Number |
| Volvo Penta |
3852548 |
| OMC |
3852548, 911795, 778091 |
| Sierra |
18-8349 |
Compatible Engine Models
Confirm your engine model/year in the table below.
Volvo Penta
| Brand |
Model |
Rated HP |
Stroke |
OEM Part No. |
Notes |
| Volvo Penta |
SX-C |
Various |
4-Stroke |
3852548 |
|
| Volvo Penta |
SX-M |
Various |
4-Stroke |
3852548 |
|
| Volvo Penta |
SX-R |
Various |
4-Stroke |
3852548 |
|
| Volvo Penta |
SX-S |
Various |
4-Stroke |
3852548 |
|
| Volvo Penta |
DP-SM |
Various |
4-Stroke |
3852548 |
|
OMC
| Brand |
Model |
Rated HP |
Stroke |
OEM Part No. |
Notes |
| OMC |
Stern Drive |
2.3L |
4-Stroke |
3852548, 911795, 778091 |
|
| OMC |
Stern Drive |
2.5L |
4-Stroke |
3852548, 911795, 778091 |
|
| OMC |
Stern Drive |
3.0L |
4-Stroke |
3852548, 911795, 778091 |
|
| OMC |
Stern Drive |
3.2L |
4-Stroke |
3852548, 911795, 778091 |
|
| OMC |
Stern Drive |
4.3L |
4-Stroke |
3852548, 911795, 778091 |
|
| OMC |
Stern Drive |
5.0L |
4-Stroke |
3852548, 911795, 778091 |
|
| OMC |
Stern Drive |
5.7L |
4-Stroke |
3852548, 911795, 778091 |
|
| OMC |
Stern Drive |
5.8L |
4-Stroke |
3852548, 911795, 778091 |
|
| OMC |
Stern Drive |
7.4L |
4-Stroke |
3852548, 911795, 778091 |
|
| OMC |
Stern Drive |
7.5L |
4-Stroke |
3852548, 911795, 778091 |
|
| OMC |
Stern Drive |
8.2L |
4-Stroke |
3852548, 911795, 778091 |
|
Technical Specifications
| Specification |
Value |
| Product Type |
Gimbal Bearing Oil Seal |
| Installation |
Direct replacement |
| Housing Material |
Rubber with metal reinforcement |
| Dimensions |
O.D.: 2.19" (55.6 mm), Shaft Size: 1.38" (35.1 mm), Width: 0.5" (12.7 mm) |
| Fitting Type |
Press-fit |
| Warranty |
Limited lifetime (Sierra); Manufacturer warranty (others) |
Package Contents
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2 x Oil Seals (Replaces 3852548, 911795, 778091)
Installation Guide
- Safely secure the vessel and gain access to the stern drive's gimbal housing.
- Carefully remove any components obstructing access to the gimbal bearing area.
- Use a dedicated seal puller to extract the old oil seal, taking care not to damage the housing bore.
- Thoroughly clean the seal bore and inspect it for any deep scratches or gauges.
- Apply a thin layer of appropriate marine sealant to the outer metal surface of the new seal.
- Using a suitable seal driver or arbor press, press the new seal into the housing until it is fully and evenly seated.
- Reinstall the gimbal bearing and any other components that were removed.
Troubleshooting & FAQ
Q: How do I know if this oil seal will fit my drive?
A: This seal is designed for specific Volvo Penta and OMC Cobra drives. Please check the 'Compatible Engine Models' and 'Part Number Cross-Reference' tables on this page. Verifying your drive model and original part number is the best way to ensure a match.
Q: What are the signs of a failing gimbal bearing oil seal?
A: Common signs include water in your gimbal bearing grease, a grinding or roaring noise from the transom area (indicating a failed bearing due to water intrusion), or visible oil/grease leaking from the gimbal housing.
Q: How often should the gimbal bearing oil seal be replaced?
A: It is recommended to inspect the seal whenever you service the gimbal bearing or bellows. As a best practice, replace the seal every time you replace the gimbal bearing to prevent premature failure of the new bearing.
Q: OEM vs. Aftermarket?
A: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.
Q: How fast do you ship and how much does it cost?
A: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.
Q: What is your warranty and return policy?
A: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.
Important Notes
- Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
- This product is an aftermarket replacement part and is not an OEM component.
- Professional installation is recommended to ensure safety and optimal performance.
Why Choose JLM MARINE?
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Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
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Fast Global Shipping: Free delivery worldwide in 5–15 days.
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Direct from Manufacturer: Competitive pricing without compromising quality.