Sunsong 3404571 Power Steering Reservoir Hose - Reservoir To Pump

Power Steering Reservoir Hose for BMW X5

Sunsong 3404571 is a power steering reservoir hose for the reservoir-to-pump return path on select BMW X5 applications. It is built for low-pressure, high-temperature return service and is engineered to match the original routing and connection points on the vehicle.

For BMW X5 owners searching for a reservoir to pump power steering hose replacement, this part number 3404571 provides a direct-fit solution for the listed model years.

Key Features

• Return hose construction rated for up to 250 psi maximum working pressure
• Suitable for low-pressure, high-temperature power steering return operation
• High-grade steel tubing with zinc electroplating for corrosion and rust resistance
• Precision-engineered fit for the reservoir-to-pump routing
• Includes required brackets, grommets, heat shields, bushings, and protective sleeves where applicable to restore wearable components to original condition

Detailed Description

Sunsong 3404571 is a power steering reservoir hose designed for the return side of the steering system on 2002-2003 BMW X5 models. It is built to handle the demands of return-flow steering fluid movement while resisting damage from humidity, road salt, water, and grime. The steel tubing and zinc coating help maintain durability in harsh underbody conditions, while the exact-fit engineering supports proper routing and connection alignment. This BMW X5 power steering reservoir hose is a practical replacement when the original hose shows wear, corrosion, or leakage.

This part cross-references Dorman - HELP 81415 and Rein PSH0160 for the same application.

What It Helps Fix

• Power steering fluid leaks at the reservoir-to-pump return hose
• Corrosion or rust on the original hose assembly
• Cracked, hardened, or deteriorated return hose material
• Improper hose routing caused by worn mounting points or supports
• Noise or steering effort concerns related to low fluid level from hose leakage

Installation Notes and Tips

Fits 2003 BMW X5, Reservoir To Pump. Fits 2002 BMW X5, Reservoir To Pump; vehicles manufactured from July 1st. Verify the hose routing and connection points against the original part before installation. Inspect adjacent brackets, bushings, and sleeves during replacement so the steering return line is secured correctly.

Quality Assurance

Sunsong manufactures this hose to meet original equipment performance standards for return-hose service. The part number 3404571 is engineered for exact fit and built with corrosion-resistant materials to support long-term service in demanding underhood and underbody conditions.