Sunsong 3404952 Power Steering Return Line Hose Assembly - Gear To Cooler

Power Steering Return Hose for Ford Super Duty

The Sunsong 3404952 power steering return line hose assembly is built for low-pressure, high-temperature return-side service in the steering system. It is a direct-fit replacement for select Ford heavy-duty trucks and SUV applications, including 2003-2005 Ford Excursion and 2003-2004 Ford F-250 Super Duty and F-350 Super Duty models at the gear-to-cooler position.

• Direct-fit power steering return line hose assembly
• Designed for low-pressure, high-temperature return hose operation
• 33.5 in. overall length for the specified routing
• End 1 fitting type: ID hose
• End 2 fitting size/type: 3/8 in. bubble flare
• CSM hose material for steering return service
• Compatible with gear-to-cooler routing on listed Ford applications

Detailed Product Information

Sunsong 3404952 is a power steering return line hose assembly engineered to match the original routing and connection style on select Ford Excursion, F-250 Super Duty, and F-350 Super Duty vehicles. The hose is specified for the gear-to-cooler position and uses an ID hose connection on one end with a 3/8 in. bubble flare fitting on the other, helping maintain the correct return-side plumbing layout. This part number, 3404952, is intended for 2003-2005 Ford Excursion and 2003-2004 Ford F-250 Super Duty and F-350 Super Duty applications.

According to the manufacturer, the return hose construction exceeds original equipment performance standards for this service category and is rated for a maximum working pressure of 250 psi. The steel tubing is zinc electroplated to improve resistance to corrosion and rust from humidity, road salt, water, and grime. This part cross-references Ford OE numbers 3C3Z3A713BA and 3C3Z3A713BB for the same application.

Common Problems This Part Can Address

• Power steering fluid seepage from a worn return hose
• Corrosion on the original steel line or fittings
• Incorrect hose routing on gear-to-cooler steering plumbing
• Softening or deterioration of the return hose material from heat exposure
• Steering fluid loss caused by damaged flare or hose connections

Installation Notes and Tips

Verify the vehicle year, model, and gear-to-cooler routing before installation. Inspect the mating fittings, cooler connections, and surrounding steering components for wear or contamination before connecting the new hose. Confirm that the 3/8 in. bubble flare end and ID hose end match the original configuration on the vehicle.

Quality Assurance

Sunsong manufactures this return hose assembly with steel tubing and zinc plating to support corrosion resistance in demanding underbody conditions. The part is precision engineered for the listed Ford applications and built to restore the original hose routing and connection style.