Sunsong 3404714 Power Steering Return Line Hose Assembly - Cooler To Reservoir

Power Steering Return Hose for BMW 525i and 530i

Sunsong 3404714 is a power steering return line hose assembly for the cooler-to-reservoir circuit on select BMW applications. It is built for low-pressure, high-temperature return flow and is engineered to match the original routing and connection points for a direct replacement.

Key Features

• Fits 2004-2005 BMW 525i, cooler to reservoir
• Fits 2004-2005 BMW 530i, cooler to reservoir
• Max working pressure rated at 250 psi for return-side service
• Steel tubing with zinc electroplating for corrosion and rust resistance
• Precision-engineered fit with brackets, grommets, heat shields, bushings, and protective sleeves as required
• Part number 3404714 for easy identification and ordering

Detailed Description

This Sunsong power steering return line hose assembly is made for the return path between the cooler and reservoir on 2004-2005 BMW 525i and 530i models. The hose assembly uses high-grade steel tubing with a zinc-coated finish to help resist humidity, road salt, water, and grime exposure. Sunsong 3404714 is engineered to restore the original routing and wear points of the steering return circuit while meeting the demands of low-pressure, high-temperature operation.

This part cross-references Dorman - HELP 81459 for the same application.

What It Helps Fix

• Leaking power steering return hose connections
• Corrosion on the return line tubing
• Fluid seepage at the cooler-to-reservoir route
• Noise or poor steering assist caused by low fluid level
• Damaged hose routing components from heat and road exposure

Installation Notes and Tips

Verify the vehicle year, model, and cooler-to-reservoir routing before installation. Inspect adjacent brackets, grommets, heat shields, bushings, and sleeves for wear so the replacement line seats correctly and follows the original path. Confirm all connections are clean and properly tightened after installation, then check for leaks with the steering system at operating temperature.

Quality Assurance

Sunsong manufactures this return hose assembly to exceed original equipment performance standards for return-side steering service. The steel tubing and zinc-plated finish are selected to improve resistance to corrosion in harsh underbody conditions.