Sunsong 3404690 Power Steering Return Line Hose Assembly - Gear To Cooler

Power Steering Return Hose for Ford and Lincoln

Sunsong 3404690 is a power steering return line hose assembly built for low-pressure, high-temperature return-side service. It is engineered for exact fit on select Ford Thunderbird and Lincoln LS applications, with corrosion-resistant steel tubing and a zinc-plated finish for added protection in harsh underhood and road conditions.

• Return line hose assembly for steering gear to cooler routing
• Max working pressure of 250 psi for low-pressure return service
• High-grade steel tubing with zinc coating for rust and corrosion resistance
• CSM hose material for heat-resistant return line operation
• Precision-engineered fit for original-style routing and connection points
• End fittings: 16 mm male and 3/8 in bubble flare
• Length: 36.9 in (937 mm)

Fitment Details

Compatible with 2002-2005 Ford Thunderbird, Gear To Cooler, power steering return line hose assembly with threaded fitting. Compatible with 2000-2002 Lincoln LS, Gear To Cooler, power steering return line hose assembly with threaded fitting. This part cross-references Monroe Shocks & Struts (e.g., 5681) for the same application.

Sunsong 3404690 is also a direct-fit reference for owners searching for a Ford Thunderbird power steering return hose or a Lincoln LS steering gear to cooler return line hose assembly. The part number 3404690 is commonly used when replacing a leaking or corroded return-side hose on these vehicles.

Common Problems This Part Can Address

• Power steering fluid seepage from a worn return hose
• Corrosion on steel tubing from humidity, road salt, water, and grime
• Heat-related hose deterioration in the return circuit
• Restricted or damaged steering gear to cooler fluid routing
• Fitment issues caused by an incorrect replacement hose

Installation Notes

Verify the end fittings, routing, and vehicle application before installation. This assembly is for gear-to-cooler return line use and should be matched to the original hose path and connection style on the vehicle. Inspect nearby brackets, grommets, heat shields, bushings, and sleeves during service and replace worn components as needed to restore the system to original condition.

Quality Assurance

Sunsong manufactures this return hose assembly to exceed original equipment performance standards for return-side steering service. The steel tubing is electroplated with zinc to improve resistance to corrosion and rust in demanding operating environments.