Trim Tilt Hydraulic Hose – Fits Volvo Penta 290 290DP SP-A DP-A DP-B (Replaces 852839)

Product Details

This Trim Tilt Hydraulic Hose is designed for Volvo Penta AQ-Drives, specifically fitting 290, 290DP, SP-A, DP-A, and DP-B outdrives including model variants SP-A1, SP-A2, DP-A1, DP-A2, DP-B, and DP-B1. This is the critical hose that runs between the hydraulic pump and the transom, enabling proper trim and tilt operation for your outdrive system.

This aftermarket replacement directly interchanges with Volvo Penta OEM part number 852839 and Marineparts MP852839.

• Connects hydraulic pump to transom connector
• Engineered for AQ-Drive outdrive systems
• Direct-fit replacement for multiple 290-series and DP-series models

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

Function

Trim and tilt hydraulic pressure line

Connection Points

Hydraulic pump to transom connector

Application

Volvo Penta AQ-Drive outdrives

Compatible Series

290-series, SP-A series, DP-A series, DP-B series

What's in the Box

• 1x Hose Trim Pump to Connector

The package contains all the parts shown in the product images.

Installation Notes

1. Disconnect battery and relieve all hydraulic pressure from the trim/tilt system before beginning work.
2. Locate the existing hose running from the hydraulic pump to the transom connector.
3. Using appropriate wrenches, carefully disconnect the hose fittings at both the pump and transom ends.
4. Have rags or a drip pan ready to catch residual hydraulic fluid.
5. Remove the old hose and inspect fittings and connection points for damage or corrosion.
6. Route the new hose along the same path as the original, ensuring no kinks or sharp bends.
7. Hand-thread fittings first to confirm proper engagement, then tighten to manufacturer torque specs.
8. Refill the trim/tilt reservoir with appropriate hydraulic fluid and bleed the system according to Volvo Penta service procedures.
9. Reconnect the battery and test trim/tilt operation through full range of motion.
10. Check all connections for leaks while system is under pressure.

Troubleshooting & FAQ

How do I know if my trim/tilt hose needs replacement?

Common signs include visible cracks, abrasion, or bulging in the hose, hydraulic fluid leaks near pump or transom connections, sluggish or inconsistent trim/tilt response, and low hydraulic fluid levels requiring frequent top-ups.

Can I use this hose on other Volvo Penta outdrive models?

This hose is specifically engineered for 290-SP, 290-DP, SP-A (A1, A2), DP-A (A1, A2), and DP-B (B1) outdrives. Always verify your outdrive model number against the compatibility table before ordering.

What type of hydraulic fluid should I use after installation?

Use only Volvo Penta-approved power trim/tilt hydraulic fluid or a marine-grade equivalent that meets manufacturer specifications. Automotive fluids may damage seals and reduce system lifespan.

Do I need to bleed the system after replacing this hose?

Yes, air introduced during hose replacement must be purged from the hydraulic system. Follow Volvo Penta's bleeding procedure, which typically involves cycling the trim/tilt through full range while topping off the reservoir until all air is expelled.

How often should trim/tilt hoses be inspected?

Inspect hoses at the beginning of each season and every 100 operating hours. Look for cracks, leaks, abrasion from contact with moving parts, and softening or hardening of the hose material.

Will this hose fit if my outdrive has been modified?

This hose is designed for stock Volvo Penta configurations. If your outdrive has aftermarket modifications or custom hydraulic routing, verify dimensional compatibility and fitting types before purchase.

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.