Sunsong 3403649 Power Steering Return Line Hose Assembly - Cooler To Reservoir

BMW X5 Power Steering Return Hose

The Sunsong 3403649 power steering return line hose assembly is built for 2001-2006 BMW X5 models with the cooler-to-reservoir routing. It is engineered to meet or exceed original equipment performance standards for low-pressure, high-temperature return line service.

• Fits 2001-2006 BMW X5, cooler to reservoir
• Max working pressure of 250 psi for return-side steering circuits
• High-grade steel tubing with zinc electroplating for corrosion resistance
• Built for exposure to humidity, road salt, water, and grime
• Precision-engineered for exact fit and original-style routing
• Includes required brackets, grommets, heat shields, bushings, and protective sleeves as specified for the application

Application Details

This power steering return line hose assembly is a direct-fit replacement for BMW X5 power steering systems that route fluid from the cooler to the reservoir. The Sunsong 3403649 is designed to restore proper return-line function while matching the vehicle’s original configuration and mounting points. This part cross-references Rein PSH0143 for the same application.

Common Problems It Can Address

• Power steering fluid seepage at the return line
• Corrosion or rust on the original hose assembly
• Cracked or deteriorated hose sections from heat and age
• Improper routing or fitment after prior repairs
• Noisy or inconsistent steering caused by a compromised return line

Installation Notes

Verify the cooler-to-reservoir routing before installation on your BMW X5. Inspect adjacent steering components, mounting points, and seals for wear, and confirm all connection surfaces are clean before assembly. The hose assembly is precision engineered for exact fit, so proper alignment with the factory brackets and protective components is important for correct installation.

Quality Assurance

Sunsong manufactures this return hose assembly to original equipment performance standards using corrosion-resistant steel tubing and zinc plating for added durability in harsh underbody conditions. Part number 3403649 is built for consistent low-pressure return-line operation in BMW X5 applications.