Volvo Penta Power Trim Pump Hose Assembly 21721548 | OEM DPH DPR Sterndrive
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Volvo Penta OEM Power Trim Pump Hose Assembly
Part Number: 21721548 | SKU: 21721548
Brand: Volvo Penta | Official Product Type: Power Trim Pump Hose Assembly
System: Power Trim / Hydraulic Tilt System
Diagram Position: Trim Pump Assembly — Object Key 17
Supersedes: 3809559
Estimated Weight: 0.32 kg
The genuine Volvo Penta OEM hydraulic hose assembly for the power trim pump on DPH and DPR sterndrive applications. This hose carries hydraulic fluid between the trim pump and the trim cylinder circuit — a critical component for reliable trim and tilt operation. Confirm fitment using your drive serial number and the trim pump parts diagram before ordering.
Key Features
- Genuine Volvo Penta OEM hose assembly — factory fit and pressure rating
- Designed for the power trim pump hydraulic circuit on DPH and DPR sterndrives
- Diagram position: Trim Pump Assembly, Object Key 17
- Companion hose in the same assembly group: 21721550
- Associated trim pumps in the same assembly: 3863128, 3818340, 21692435
- Supersedes earlier part number 3809559
- Crimped fittings — direct OEM replacement, no modification required
Compatible Applications
- Volvo Penta DPH-A sterndrive
- Volvo Penta DPH-B sterndrive
- Volvo Penta DPH-C sterndrive
- Volvo Penta DPH-D sterndrive
- Volvo Penta DPH-D1 sterndrive
- Volvo Penta DPH-BP sterndrive
- Volvo Penta DPR-A sterndrive
- Volvo Penta DPR-B sterndrive
- Volvo Penta DPR-C sterndrive
- Confirm fitment using your drive serial number and the Volvo Penta trim pump parts diagram — hose routing can vary by drive generation and hydraulic layout
Superseded Part Numbers
Part 21721548 supersedes the following earlier Volvo Penta part number:
- 3809559
When to Replace
Replace this hose assembly when the original shows hydraulic fluid seepage, cracked or abraded outer covering, corrosion at the fittings, damaged crimps, or when trim and tilt performance issues are traced to hose condition. It is also good practice to replace the hose during trim pump service if it has been disturbed or shows visible wear — a failed hydraulic hose can cause complete loss of trim function.
Installation Notes
- Confirm the part number against your drive serial number and trim pump diagram before installation — the companion hose (21721550) in the same assembly can appear similar once removed
- Inspect the companion hose, fittings, and trim pump wiring at the same time to avoid repeat issues after service
- Depressurize the hydraulic trim system before disconnecting any hose fittings
- Check for leaks and verify full trim range of motion after installation
Parts Desk Insights
Best Use Case: This hose is most commonly needed during trim pump rebuilds, when diagnosing hydraulic fluid loss, or when trim performance has degraded and the hose shows visible wear or seepage. At $293, it’s a significant OEM assembly — worth taking the time to confirm the correct hose position on the diagram before ordering, since the two hoses in this trim pump assembly (21721548 and 21721550) are installed close together and can look similar once removed from the drive.
Common Questions: The most common issue customers run into is ordering the wrong hose from the pair. The trim pump assembly uses two hydraulic hoses — always cross-reference the diagram position (Object Key 17 for this hose) against your drive serial number to confirm you have the right one. If you’re replacing one hose due to wear, it’s worth inspecting the companion hose at the same time.
Technical FAQ
Q: How do I know if this is the correct hose for my drive?
A: Use your drive serial number to pull up the Volvo Penta trim pump parts diagram for your specific DPH or DPR variant. This hose appears as Object Key 17 in the trim pump assembly group. If you need help confirming, contact us with your serial number.
Q: What is the companion hose in this assembly?
A: The companion hose is Volvo Penta part 21721550, also in the trim pump assembly. If both hoses show wear, they can be replaced together.
Q: My drive uses part 3809559 — is 21721548 the correct replacement?
A: Yes — 21721548 is the current Volvo Penta OEM part that supersedes 3809559.
Q: Can I repair a leaking trim hose instead of replacing it?
A: No — hydraulic hose assemblies with crimped fittings are not field-repairable. A leaking or damaged hose should be replaced with the OEM assembly to ensure correct pressure rating and fitting integrity.
Related Parts
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
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