Hydraulic Trim Oil Line – Fits Volvo Penta SX-M Port Down (Replaces 3857523)
Hydraulic Trim Oil Line – Fits Volvo Penta SX-M Port Down (Replaces 3857523) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
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Hydraulic Trim Oil Line – Fits Volvo Penta SX-M Port Down (Replaces...
Product Details
This Hydraulic Trim Oil Line is a direct replacement for Volvo Penta SX-M drivetrains from 1994 and newer, specifically for models with a Port Down trim system configuration. It serves as the crucial connection between the trim cylinder and the manifold assembly, ensuring proper hydraulic fluid flow for trim and tilt operations.
This part is a direct interchange for Volvo Penta part number 3857523 and OMC part number 3857523.
- Designed for Port Down systems with fore connections.
- Connects the trim cylinder to the manifold assembly.
- Compatible with standard Volvo Penta hydraulic trim fluid.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Volvo Penta | 3857523 |
| OMC | 3857523 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For Volvo Penta: This part is compatible with SX-M drivetrains from 1994 onwards, specifically for port down configurations.
For OMC: This part is compatible with SX-M drivetrains from 1994 onwards, specifically for port down configurations.
| Brand | Model | Years | OEM Part No. | Notes |
|---|---|---|---|---|
| Volvo Penta | SX-M | 1994–Up | 3857523 | Port Down with Fore Connections |
| OMC | SX-M | 1994–Up | 3857523 | Port Down with Fore Connections |
Technical Specs
- Product Type
- Hydraulic Trim Oil Line
- Installation
- Port Down with Fore Connections
- System
- Hydraulic System Component
- Connection
- Trim Cylinder to Manifold Assembly
- Housing Color
- Black
- Fitting Type
- Standard hydraulic trim fittings
- Compatible Fluid
- Compatible with Volvo Penta hydraulic trim fluid
What’s in the Box
- 1 x Oil Line (3857523)
Installation Notes
- Ensure the engine is off and the outdrive is in a secure, supported position.
- Relieve any pressure from the hydraulic system according to the manufacturer's procedure.
- Place absorbent pads under the connection points to catch any spilled hydraulic fluid.
- Using a flare nut wrench, carefully disconnect the old line from the trim cylinder and manifold.
- Compare the new line with the old part to confirm an exact match in length and fitting type.
- Install the new hydraulic line, ensuring fittings are clean and threaded correctly by hand to prevent cross-threading.
- Tighten the fittings to the manufacturer's recommended torque specification. Do not overtighten.
- Refill the trim fluid reservoir with the recommended hydraulic fluid.
- Cycle the trim system up and down several times to bleed air from the system.
- Check all connection points for leaks and top off the fluid level as necessary.
Troubleshooting & FAQ
How do I know if this is the correct oil line for my boat?
This line is for Volvo Penta and OMC SX-M drives (1994–Up) with a "Port Down" trim system. Verify your setup and compare your old part to our images. The key is the port-side, downward-facing connection at the manifold.
What are the signs my hydraulic trim line is failing?
Common signs include visible fluid leaks around the line or fittings, a spongy or unresponsive trim system, or the drive failing to hold its position. A visual inspection for cracks, brittleness, or swelling is also recommended.
Can I replace just one line, or should I replace both?
While you can replace only the failed line, it is often recommended to replace both the port and starboard lines at the same time, especially if they are the same age. The other line may be nearing the end of its service life.
What type of fluid should I use with this line?
Use a high-quality hydraulic trim and tilt fluid compatible with Volvo Penta systems. Refer to your engine’s service manual for the specific fluid recommendation.
Is any special tool required for installation?
You will need standard line wrenches (also known as flare nut wrenches) to avoid rounding off the soft metal of the fittings. A torque wrench is also recommended to tighten the fittings to the correct specification without causing damage.
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.
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