Trim Tilt Cylinder Repair Seal Kit – Fits OMC Cobra Stern Drive & Volvo Penta SX Series (Replaces 0985060, 3854247)
Trim Tilt Cylinder Repair Seal Kit – Fits OMC Cobra Stern Drive & Volvo Penta SX Series (Replaces 0985060, 3854247) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Trim Tilt Cylinder Repair Seal Kit – Fits OMC Cobra Stern Drive &am...
Product Details
This Trim Tilt Cylinder Repair Seal Kit is designed for a wide range of OMC Cobra Stern Drive engines (2.3L–8.2L) from 1986–1998 and also fits Volvo Penta SX series models including the SX-C, SX-R, and SX-S series. It provides all the necessary seals to rebuild a single trim or tilt cylinder, restoring hydraulic integrity and performance.
It serves as a direct replacement for OMC part numbers 0985060 and 0778202, Volvo Penta 3854247, and SeaSierra 0985060.
- Engineered as a direct OEM-quality replacement.
- Includes high-quality seals for a complete single-cylinder rebuild.
- This kit rebuilds one cylinder; two kits are required for a complete stern drive service.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket brands.
| Brand | Part Number |
|---|---|
| OMC | 0985060 |
| OMC | 0778202 |
| Volvo Penta | 3854247 |
| SeaSierra | 0985060 |
Engine & Model Compatibility
Confirm your engine model and year in the tables below.
For OMC models, this kit is compatible with Cobra and King Cobra stern drives from 1986 to 1998 across various displacements. It replaces seals in cylinders with part numbers 3852414, 3850683, 3885196, 3857470, and 3857471.
For Volvo Penta models, this kit fits a range of SX and DP series drives.
| Brand | Model | Displacement | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|
| OMC | Cobra/King Cobra | 2.3L (232) | 1987–1990 | 0985060, 0778202 | Replaces cylinders: 3852414, 3850683, 3885196, 3857470, 3857471 |
| OMC | Cobra | 2.5L (252) | 1986 | 0985060, 0778202 | Replaces cylinders: 3852414, 3850683, 3885196, 3857470, 3857471 |
| OMC | Cobra/King Cobra | 3.0L (302) | 1986–1998 | 0985060, 0778202 | Replaces cylinders: 3852414, 3850683, 3885196, 3857470, 3857471 |
| OMC | Cobra | 3.2L (32D) | 1992–1993 | 0985060, 0778202 | Replaces cylinders: 3852414, 3850683, 3885196, 3857470, 3857471 |
| OMC | Cobra/King Cobra | 4.3L (432, 434) | 1986–1998 | 0985060, 0778202 | Replaces cylinders: 3852414, 3850683, 3885196, 3857470, 3857471 |
| OMC | Cobra/King Cobra | 5.0L (504) | 1986–1998 | 0985060, 0778202 | Replaces cylinders: 3852414, 3850683, 3885196, 3857470, 3857471 |
| OMC | Cobra/King Cobra | 5.7L (572, 574) | 1986–1998 | 0985060, 0778202 | Replaces cylinders: 3852414, 3850683, 3885196, 3857470, 3857471 |
| OMC | Cobra | 5.8L (584) | 1989–1996 | 0985060, 0778202 | Replaces cylinders: 3852414, 3850683, 3885196, 3857470, 3857471 |
| OMC | Cobra | 7.4L (744) | 1988, 1990–1998 | 0985060, 0778202 | Replaces cylinders: 3852414, 3850683, 3885196, 3857470, 3857471 |
| OMC | Cobra | 7.5L (754) | 1987–1990 | 0985060, 0778202 | Replaces cylinders: 3852414, 3850683, 3885196, 3857470, 3857471 |
| OMC | Cobra | 8.2L (824, 82) | 1992–1993, 1998 | 0985060, 0778202 | Replaces cylinders: 3852414, 3850683, 3885196, 3857470, 3857471 |
| Brand | Model | OEM Part No. |
|---|---|---|
| Volvo Penta | TSK SX-C, SX-C1, SX-C1AC, SX-C2AC | 3854247 |
| Volvo Penta | TSK SX-CLT M10, TSK SX-CLT1 | 3854247 |
| Volvo Penta | TSK SX-R, SX-R1, SX-R2 | 3854247 |
| Volvo Penta | TSK SX-S, SX-SLT | 3854247 |
| Volvo Penta | DP-S, DP-S1 | 3854247 |
| Volvo Penta | SX-RT1, SX-RT2 | 3854247 |
| Volvo Penta | SX-C, SX-C1, SX-C2 | 3854247 |
| Volvo Penta | SX-CT, SX-CT1, SX-CT2 | 3854247 |
Technical Specs
- Product Type
- Trim & Tilt Cylinder Repair Seal Kit
- Installation
- Direct OEM replacement
- Package Dimensions
- 6.77 × 4.21 × 0.47 inches (172 × 107 × 12 mm)
- Weight
- 0.317 ounces (9 grams)
- Warranty
- Varies by seller (Five Star Marine offers 2-year warranty)
- Other Technical Attributes
- High-quality replacement for trim tilt cylinders
What’s in the Box
- 1 x Seal Kit for a single cylinder service
Installation Notes
- Ensure the stern drive is securely supported before starting work.
- Disconnect the battery and relieve any hydraulic pressure in the system.
- Remove the target trim/tilt cylinder according to your service manual.
- Carefully disassemble the cylinder, taking note of the order and orientation of all internal components.
- Remove the old seals, being careful not to scratch or damage the cylinder housing or piston rod.
- Clean all components thoroughly with a suitable solvent and inspect for wear or damage.
- Lubricate the new seals with clean hydraulic fluid before installation.
- Carefully install the new seals in their correct locations.
- Reassemble the cylinder, torqueing all fasteners to the manufacturer's specification.
- Re-install the cylinder on the stern drive, reconnect hydraulic lines, and refill the system with fresh fluid.
- Bleed the system of air and check for leaks before returning to service.
Troubleshooting & FAQ
Does this kit repair one or two cylinders?
This kit contains all the seals necessary to rebuild one single trim/tilt cylinder. Most applications have two cylinders, so you will need to purchase two kits for a complete service.
What are the seals made of?
The seals are made from high-quality materials designed to meet or exceed OEM specifications. Some third-party sellers, like Five Star Marine, may note specialized materials such as Viton for enhanced durability.
Why do some reviews mention fitment issues?
Correct fitment depends on matching the kit to your specific cylinder part number, not just your engine model. Before ordering, verify this kit is a replacement for your cylinder (e.g., 3852414, 3850683, etc.) to ensure compatibility.
How do I know if my tilt/trim seals are failing?
Common signs of failing seals include a visible hydraulic fluid leak around the cylinder, a spongy or jerky trim operation, or the outdrive slowly "drifting" down from its trimmed position over time.
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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