21721550 23392301 3809560 3862856 Hydraulic Power Trim Hose for Volvo Penta DPH-A DPH-C DPH-D DPR-A DPR-B DPR-C DPR-D | JLM Marine

Hydraulic Power Trim Hose – Fits Volvo Penta DPH-A DPH-C DPH-D DPR-A DPR-B DPR-C DPR-D Sterndrives

This hydraulic power trim hose is engineered for Volvo Penta DPH-A, DPH-C, DPH-D, DPR-A, DPR-B, DPR-C, and DPR-D sterndrive models. As one of two trim hydraulic hoses on DP-H and DP-R sterndrives, it is designed to deliver reliable hydraulic pressure for smooth trim and tilt operation in your marine application.

This part directly replaces Volvo Penta OEM part numbers 21721550, 23392301, 3809560, 3862856, as well as aftermarket equivalent SLP H-550. Manufactured to meet or exceed OE specifications, it features heavy-duty gauge steel construction with a premium rubber sheath for excellent wear resistance and long service life.

• Flexible design to bend and fit in narrow spaces of sterndrive installations
• Heavy-duty construction with superior material quality
• Direct bolt-on replacement for OEM parts

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Compatible Engine Models

Confirm your engine model/year in the table below.

Technical Specifications

Package Contents

• 1× Hydraulic Pump Trim Hose

(The package contains all the parts shown in the picture.)

Installation Guide

1. Before beginning, ensure the sterndrive is in the full down position and the engine is off. Disconnect the battery to prevent accidental hydraulic pump activation.
2. Locate the existing hydraulic trim hose on your DPH or DPR sterndrive unit. Note the routing and orientation before removal.
3. Place a drain pan beneath the hose connections to catch any hydraulic fluid that may leak during removal.
4. Using appropriate wrenches, carefully loosen and disconnect the hydraulic fittings at both ends of the old hose. Cap or plug open lines immediately to minimize fluid loss.
5. Remove the old hose from the sterndrive, noting any mounting clips or brackets that secure it in place.
6. Inspect the hydraulic fittings and sealing surfaces for damage, corrosion, or wear. Replace O-rings or seals if necessary.
7. Route the new hydraulic trim hose along the same path as the original, ensuring it does not contact sharp edges or moving components.
8. Thread the fittings by hand first to avoid cross-threading, then tighten securely with wrenches to the manufacturer's torque specifications.
9. Reinstall any mounting clips or brackets to secure the hose and prevent chafing or kinking.
10. Refill the hydraulic trim system with the correct type and amount of hydraulic fluid as specified in your service manual.
11. Reconnect the battery and cycle the trim/tilt system several times to purge air and check for leaks at all connections.
12. Inspect the installation one final time, verify proper operation, and top off hydraulic fluid if needed.

Troubleshooting & FAQ

Q: How do I confirm this hose fits my Volvo Penta sterndrive?
A: Check the Compatible Engine Models table above to verify your sterndrive model (DPH-A, DPH-C, DPH-D, DPR-A, DPR-B, DPR-C, or DPR-D). Also cross-reference your original part number with 21721550, 23392301, 3809560, or 3862856 to ensure compatibility.

Q: What are the signs that my hydraulic trim hose needs replacement?
A: Common symptoms include visible cracks or bulging in the rubber sheath, hydraulic fluid leaks around the hose or fittings, slow or erratic trim/tilt operation, or loss of hydraulic pressure. If you notice any of these, inspect and replace the hose promptly.

Q: How often should I replace the hydraulic trim hose?
A: There is no fixed replacement interval; inspect the hose annually during routine maintenance. Replace it immediately if you observe any signs of wear, damage, leakage, or deterioration to prevent system failure.

Q: Can I install this hose myself or do I need a professional?
A: If you have experience with hydraulic systems and the proper tools, DIY installation is possible by following the steps in the Installation Guide. However, professional installation is recommended to ensure correct routing, torque specifications, and proper bleeding of the hydraulic system.

Q: What is the difference between this aftermarket hose and the OEM Volvo Penta part?
A: This aftermarket hose is manufactured to meet or exceed OEM specifications using heavy-duty gauge steel and premium rubber materials. It functions as a direct replacement at a more competitive price point, though it is not an OEM component.

Q: OEM vs. Aftermarket?
A: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

Q: How fast do you ship and how much does it cost?
A: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

Q: What is your warranty and return policy?
A: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

• Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
• This product is an aftermarket replacement part and is not an OEM component.
• Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

• Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
• Fast Global Shipping: Free delivery worldwide in 5–15 days.
• Direct from Manufacturer: Competitive pricing without compromising quality.