Gimbal Bearing Oil Seal – Fits Volvo Penta SX/DP & OMC Cobra Drives (Replaces 3852548, 911795)
Gimbal Bearing Oil Seal – Fits Volvo Penta SX/DP & 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
You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Gimbal Bearing Oil Seal – Fits Volvo Penta SX/DP & OMC Cobra Dr...
Product Details
This Gimbal Bearing Oil Seal is engineered for a precise fit on Volvo Penta SX, SX-C, SX-M, SX-R, SX-S, and DP-SM drive models. It is also compatible with OMC Stern Drives on engines ranging from 2.3L to 8.2L, ensuring reliable performance and leak prevention.
It serves as a direct replacement for Volvo Penta 3852548, OMC 3852548 / 911795 / 778091, and Sierra 18-8349.
- Installation Type: Direct press-fit replacement.
- Housing: Durable rubber construction with metal reinforcement.
- Package Contents: Includes two oil seals.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Volvo Penta | 3852548 |
| OMC | 3852548 |
| OMC | 911795 |
| OMC | 778091 |
| Sierra | 18-8349 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For Volvo Penta drives, this seal fits SX-C, SX-M, SX-R, SX-S, and DP-SM models.
For OMC Stern Drives, this seal is compatible with engines from 2.3L to 8.2L.
| Brand | Model | Rated HP | Stroke | OEM Part No. |
|---|---|---|---|---|
| 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 | 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 Specs
- Product Type
- Gimbal Bearing Oil Seal
- Installation
- Direct replacement
- Housing Material
- Rubber with metal reinforcement
- Outer Diameter
- 2.19" (55.6 mm)
- Shaft Size
- 1.38" (35.1 mm)
- Width
- 0.5" (12.7 mm)
- Fitting Type
- Press-fit
What’s in the Box
- 2 x Oil Seals (Replaces 3852548/911795/778091)
Installation Notes
- Ensure the engine is off and the drive is in a safe, accessible position. Disconnect the battery.
- Remove the sterndrive unit from the transom assembly to access the gimbal housing.
- Carefully remove the old gimbal bearing and oil seal, taking note of their orientation. Clean the housing bore thoroughly.
- Lubricate the outer edge of the new oil seal with appropriate marine grease.
- Using a suitable driver or socket, press the new seal into the gimbal housing until it is fully seated and flush.
- Install the new gimbal bearing, followed by any retaining rings or components.
- Reassemble the sterndrive components and reattach the drive to the transom assembly.
- Check for proper alignment and function before reconnecting the battery and starting the engine.
Troubleshooting & FAQ
How do I know if my gimbal bearing oil seal is failing?
Signs of a failing seal include water or oil leaking from the gimbal housing area, a grinding or roaring noise from the transom (indicating a failed gimbal bearing due to water intrusion), or visible rust and corrosion around the bearing.
Is this seal compatible with both OMC Cobra and Volvo Penta SX drives?
Yes, this seal is designed to be fully compatible with the specified Volvo Penta SX series drives and a wide range of OMC Cobra sterndrives from 2.3L to 8.2L engines. Always cross-reference your OEM part number (3852548, 911795, etc.) to be certain.
What is the difference between this aftermarket seal and the OEM version?
Our aftermarket seal is manufactured to meet or exceed original equipment manufacturer (OEM) specifications for fit, material, and performance. It provides a cost-effective alternative without compromising on quality or durability.
How often should the gimbal bearing oil seal be replaced?
It is recommended to inspect the oil seal whenever you service the gimbal bearing, U-joints, or bellows. Best practice is to replace the seal every time the gimbal bearing is replaced to ensure a watertight fit.
Can I install this seal myself?
While DIY installation is possible for experienced marine mechanics, it requires specialized tools like a slide hammer and seal driver. Due to the critical nature of this part in protecting the gimbal bearing from water, professional installation is highly recommended to ensure it is seated correctly and avoids premature failure.
Does the seal need to be greased before installation?
Yes, applying a thin layer of marine-grade grease to the outer and inner lips of the seal can aid in a smooth installation and improve its sealing ability. Do not use excessive amounts of grease.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.
Shipping speed & cost
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns
Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.
Safety & Important Info
- Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.
Payment & Security
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