Gimbal Bearing Oil Seal – Fits Volvo Penta SX/DP and OMC Cobra Drives (Replaces 3852548, 911795)
Gimbal Bearing Oil Seal – Fits Volvo Penta SX/DP and OMC Cobra Drives (Replaces 3852548, 911795) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
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Delivery and Shipping
Delivery and Shipping
Orders are typically processed within 1–2 business days.
U.S. orders usually arrive within 6–15 days, depending on stock location and destination.
International delivery times may vary due to customs processing.
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Gimbal Bearing Oil Seal – Fits Volvo Penta SX/DP and OMC Cobra Driv...
Gimbal Bearing Oil Seal – Fits Volvo Penta SX/DP and OMC Cobra Drives (Replaces 3852548, 911795) is backordered and will ship as soon as it is back in stock.
Product Details
This Gimbal Bearing Oil Seal is designed as a direct replacement for applications using Volvo Penta SX, SX-C, SX-M, SX-R, SX-S, and DP-SM drives. It is also listed for selected OMC Cobra stern-drive applications. The seal helps limit water and lubricant intrusion around the gimbal-bearing area when correctly installed.
Use the reference numbers below to compare the seal with the part being replaced. Always verify the drive model, original seal, dimensions, and installation orientation before ordering.
- Installation type: Direct press-fit replacement
- Construction: Rubber seal with metal reinforcement
- Package contents: Two oil seals
Part Number Matrix
The following numbers are replacement and cross-reference references for comparison with your original part.
| Brand | Part Number |
|---|---|
| Volvo Penta | 3852548 |
| OMC | 3852548 |
| OMC | 911795 |
| OMC | 778091 |
| Sierra | 18-8349 |
Drive Compatibility
Compatibility depends on the exact drive configuration and serial or production range. Confirm the original part number and seal dimensions before installation.
| Brand | Drive or Application | Reference Part Number |
|---|---|---|
| Volvo Penta | SX, SX-C, SX-M, SX-R, SX-S | 3852548 |
| Volvo Penta | DP-SM | 3852548 |
| OMC | Selected Cobra stern-drive applications | 3852548, 911795, 778091 |
Important: Model names alone do not confirm fitment. Check your original seal, drive identification, dimensions, and service information before purchasing.
Technical Specs
- Product Type
- Gimbal bearing oil seal
- Installation
- Direct replacement
- Housing Material
- Rubber with metal reinforcement
- Outer Diameter
- 2.19 in (55.6 mm)
- Shaft Size
- 1.38 in (35.1 mm)
- Width
- 0.50 in (12.7 mm)
- Fitting Type
- Press-fit
What’s in the Box
- 2 x Gimbal bearing oil seals
Installation Notes
- Turn off the engine, place the boat securely, and disconnect the battery before beginning service.
- Remove the sterndrive unit as required by the manufacturer’s service procedure to access the seal.
- Remove the old seal carefully and note its orientation. Clean the housing bore and adjacent surfaces thoroughly.
- Compare the replacement seal with the old part, including its outside diameter, inside diameter, width, and lip orientation.
- Apply a light film of suitable marine grease to the seal lip and outer edge when specified by the service procedure. Do not over-grease.
- Using a suitable seal driver, press the seal evenly into the housing until it is seated at the correct depth. Do not strike the sealing lip directly.
- Inspect the seal for distortion or damage, then reinstall the sterndrive components according to the manufacturer’s instructions.
- Check alignment, clearances, and for signs of leakage before returning the boat to service.
This product is an oil seal only. It does not include a gimbal bearing, retaining ring, tools, lubricant, or other sterndrive components unless specifically listed above.
Troubleshooting & FAQ
How do I know if the gimbal bearing oil seal may be failing?
Possible signs include water or lubricant leakage near the gimbal housing, corrosion around the bearing area, or bearing noise caused by water intrusion. These symptoms can have several causes, so inspect the complete drive assembly before replacing the seal.
Is this seal compatible with Volvo Penta SX and OMC Cobra drives?
It is listed for the Volvo Penta SX-family and DP-SM drive applications and selected OMC Cobra stern-drive applications shown on this page. Verify the original part number, drive identification, and dimensions before ordering.
What is the difference between this aftermarket seal and an OEM version?
This is an aftermarket replacement rather than an OEM-branded component. Compare the dimensions and reference numbers with the original seal to confirm that it is appropriate for your application.
When should the seal be replaced?
Inspect the seal whenever the gimbal bearing, U-joints, bellows, or related sterndrive components are serviced. Replace it if it is worn, hardened, torn, distorted, or shows evidence of leakage.
Can I install this seal myself?
Installation requires removal or repositioning of sterndrive components and a suitable seal driver. Experienced marine technicians may perform the work, but professional installation is recommended when the required tools or service information are not available.
Does the seal need lubricant before installation?
Follow the applicable service instructions. If lubrication is specified, apply only a thin film of compatible marine grease to the appropriate sealing surfaces and avoid excessive grease.
Is this an OEM part?
No. This listing is for an aftermarket replacement seal. The OEM and aftermarket reference numbers shown are provided for identification and comparison.
Shipping speed and cost
Available shipping methods, delivery estimates, and shipping charges are displayed at checkout and may vary by destination.
Warranty and returns
Warranty eligibility and return conditions are governed by the current store policies. Contact support before installation if the part received does not match the ordered application.
Safety & Important Information
- Verify the original part number, dimensions, drive model, and any applicable serial or production conditions before purchase.
- Do not operate the boat if the seal is damaged, incorrectly seated, or leaking.
- This is an aftermarket replacement, not an OEM component.
- Follow the manufacturer’s service manual and use appropriate marine-service tools and protective equipment.
About Sea Sierra
- Pro-Grade Standards — Marine replacement parts selected for dependable fit and service performance.
- Global Fulfillment — Shipping options and delivery estimates are shown at checkout.
- Manufacturer-Direct Value — Practical replacement solutions for marine maintenance and repair.
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