Hydraulic Power Trim Hose – Fits Volvo Penta DPH DPR Sterndrive (Replaces 21721550, 23392301, 3809560, 3862856)

Product Details

This Hydraulic Power Trim Hose is designed for Volvo Penta DPH-A, DPH-C, DPH-D, DPR-A, DPR-B, DPR-C, and DPR-D model stern drives. As one of two trim hydraulic hoses on DP-H and DP-R stern drives, this flexible hose bends and fits in the narrow space of your stern drive system.

This aftermarket replacement directly interchanges with Volvo Penta part numbers 21721550, 23392301, 3809560, 3862856, and SLP H-550.

• Constructed from heavy-duty gauge steel with premium rubber sheath for excellent wear resistance and long service life
• Flexible design allows for installation in tight stern drive compartments
• Manufactured to OEM specification, meeting or exceeding original equipment standards

Part Number Matrix

Use this matrix to confirm equivalent references across OEM and aftermarket.

Engine & Model Compatibility

Confirm your engine model/year in the table below.

Technical Specs

Material

Heavy-duty gauge steel core with premium rubber sheath

Construction

OEM specification, meeting or exceeding original equipment standards

Design

Flexible hydraulic hose for tight installation spaces

Application

Hydraulic power trim system

Compatibility

Volvo Penta DPH and DPR stern drives

What's in the Box

• 1× Hydraulic Pump Trim Hose

Installation Notes

1. Disconnect the battery and relieve hydraulic system pressure before beginning work.
2. Locate the existing hydraulic trim hose on your DPH or DPR stern drive unit.
3. Place a drain pan beneath the hose connection points to catch residual hydraulic fluid.
4. Carefully disconnect the hose fittings from both the hydraulic pump and stern drive cylinder.
5. Remove the old hose and inspect fittings for damage or corrosion.
6. Route the new hydraulic trim hose through the stern drive assembly, ensuring it follows the original path.
7. Connect fittings to the hydraulic pump and cylinder, tightening to manufacturer torque specifications.
8. Refill the hydraulic trim system with the correct fluid type and quantity per your service manual.
9. Bleed air from the system by cycling the trim mechanism several times.
10. Inspect all connections for leaks while operating the trim under load.
11. Verify proper trim operation through the full range of motion before returning the vessel to service.

Troubleshooting & FAQ

How do I know if my trim hose needs replacement?

Common signs include hydraulic fluid leaks near the stern drive, slow or erratic trim operation, visible cracks or bulging in the hose sheath, or loss of hydraulic pressure. Inspect hoses regularly for wear, especially if your vessel operates in saltwater or extreme temperatures.

Will this hose fit both DPH and DPR stern drives?

Yes, this hydraulic trim hose is designed to fit Volvo Penta DPH-A, DPH-C, DPH-D, DPR-A, DPR-B, DPR-C, and DPR-D models. Verify your specific stern drive model before ordering to ensure proper fitment.

What type of hydraulic fluid should I use with this hose?

Use the hydraulic fluid type specified in your Volvo Penta stern drive service manual. Most DPH and DPR units require Volvo Penta Power Trim & Steering Fluid or an equivalent ATF Dexron III. Never mix different fluid types.

Can I install this hose myself or do I need a professional?

Installation requires working with hydraulic systems under pressure and precise routing in tight spaces. If you have mechanical experience and the proper tools, you can complete this installation. Professional installation is recommended for safety and to ensure correct hydraulic system bleeding.

How does this hose differ from the OEM Volvo Penta part?

This aftermarket replacement is manufactured to OEM specifications using comparable materials—heavy-duty steel core with premium rubber sheath. It provides equivalent performance and durability at a more competitive price point than the original equipment part.

How often should hydraulic trim hoses be replaced?

Replace trim hoses at the first sign of damage, cracking, or leaking. As preventive maintenance, inspect hoses annually and consider replacement every 5–7 years depending on usage and environmental conditions, even if no visible damage is present.

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 against 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.