Sunsong 3405180 Power Steering Return Line Hose Assembly - Gear To Cooler

Power Steering Return Hose for Ram Trucks

The Sunsong 3405180 power steering return line hose assembly is built for low-pressure, high-temperature return-side service in select Ram and Dodge Ram trucks. It is engineered to meet or exceed original equipment performance expectations while supporting reliable fluid transfer from the steering gear to the cooler.

For 2010-2012 Ram 2500, Ram 3500, Ram 4000, and Dodge Ram 1500 applications, this hose assembly is a direct-fit replacement for the return line route from gear to cooler. The Sunsong 3405180 is also cross-referenced to Four Seasons 55620 for the same application.

Key Features

• Power steering return line hose assembly for gear-to-cooler routing
• Rated for a maximum working pressure of 250 psi
• Built for low-pressure, high-temperature return line operation
• CSM hose material for fluid-handling durability
• Male O-ring end on one side and ID hose connection on the other
• 40.31 in. overall length
• Fits select 2010-2012 Ram and Dodge Ram trucks
• Part number 3405180 for easy identification

Detailed Description

Sunsong 3405180 is a power steering return line hose assembly designed for the return circuit between the steering gear and cooler. It uses CSM construction and a 250 psi maximum working pressure rating, making it suitable for the lower-pressure side of the steering system where heat and fluid exposure are common. The hose measures 40.31 inches in length and uses a male O-ring fitting at one end with an ID hose connection at the other.

This part is listed for 2010 Dodge Ram 1500, 2010 Dodge Ram 2500, 2010 Dodge Ram 3500, 2011 Ram 2500, 2011 Ram 3500, 2011 Ram 4000, 2012 Ram 2500, and 2012 Ram 3500 applications at the gear-to-cooler position. For 2011 Ram 2500 and 2011-2012 Ram 3500 vehicles with hydroboost systems, the notes specify the power steering return line end fitting. The Sunsong 3405180 is a practical replacement when servicing the steering return path on Ram trucks.

Common Problems This Part Addresses

• Power steering fluid seepage at the return hose
• Cracked or hardened hose material from heat exposure
• Restricted fluid return between the steering gear and cooler
• Loss of steering assist caused by a damaged return line
• Noise or fluid odor related to a deteriorated steering hose

Installation Notes and Tips

Verify the vehicle’s steering configuration before ordering, especially on hydroboost-equipped Ram 2500 and Ram 3500 models. Confirm the gear-to-cooler routing, end fitting style, and hose length against the original line before installation. Inspect adjacent brackets, clamps, and routing points for wear so the replacement hose seats correctly and maintains proper clearance from heat sources and moving components.

Quality Assurance

Sunsong states that this return hose assembly is engineered to exceed original equipment performance standards for return-side steering service. The design focuses on fitment accuracy and fluid-system durability for select Ram and Dodge Ram truck applications.