Sunsong 3404912 Power Steering Return Line Hose Assembly - Gear To Cooler

Power Steering Return Hose for Ford Super Duty

The Sunsong 3404912 power steering return line hose assembly is built for low-pressure, high-temperature return-side service in 2000-2003 Ford F-250 Super Duty and F-350 Super Duty applications. It is engineered to match the original routing and connection points for a direct replacement on the gear-to-cooler line.

Key Features

• Fits 2000-2003 Ford F-250 Super Duty, gear to cooler
• Fits 2000-2003 Ford F-350 Super Duty, gear to cooler
• Max working pressure rated at 250 psi for return-line use
• CSM hose material for demanding steering fluid conditions
• 31.5 in. (800 mm) overall length
• End connections: 16 mm male and 3/8 in. bubble flare
• Precision-engineered replacement for OE routing and fit
• Part number: 3404912

Detailed Description

Sunsong 3404912 is a power steering return line hose assembly made for the steering gear-to-cooler circuit on Ford Super Duty trucks. This hose is designed for low-pressure return flow while handling elevated temperatures, making it a direct-service replacement for worn, leaking, or corroded return hoses on the 2000-2003 Ford F-250 Super Duty and 2000-2003 Ford F-350 Super Duty. The assembly uses high-grade steel tubing with zinc electroplating for added resistance to rust, road salt, humidity, water, and grime. Part number 3404912 is built to restore the original hose path and connection style without changing the factory steering layout.

This part cross-references Ford YC3Z3A713BA for the same application.

What It Helps Fix

• Power steering fluid seepage from a deteriorated return hose
• Corrosion on the original steel line
• Noise or inconsistent steering assist caused by restricted return flow
• Damage from heat, moisture, road salt, and grime exposure
• Incorrect hose routing or poor fit from a worn replacement line

Installation Notes and Tips

Verify the end fittings before installation: one end uses a 16 mm male connection and the other uses a 3/8 in. bubble flare. Confirm the vehicle is equipped with the gear-to-cooler return line layout before ordering. Inspect adjacent steering components, clamps, and mounting points for wear or corrosion so the replacement line can seat correctly and maintain proper routing.

Quality Assurance

Sunsong states that this return hose exceeds original equipment performance standards for return-line service and is manufactured with corrosion-resistant steel tubing and protective zinc coating for long-term durability.