Sunsong 3404481 Power Steering Return Line Hose Assembly - Cooler To Reservoir (Upper)

Power Steering Return Hose for Toyota and Lexus

Sunsong 3404481 is a power steering return line hose assembly built for low-pressure, high-temperature return-side service. It is engineered for a precise OE-style fit on select Toyota 4Runner and Lexus GX460 applications, with corrosion-resistant steel tubing and protective components used where required to restore the original routing and protection.

• Power steering return line hose assembly for return-side fluid flow
• Max working pressure of 250 psi for low-pressure return applications
• Constructed with CSM hose material
• Steel tubing with zinc electroplating for added resistance to rust and corrosion
• Precision-engineered fit for select Toyota 4Runner and Lexus GX460 models
• Length: 39.2 in. (995 mm)
• End 1 fitting type: ID hose
• No bracket and no PS switch port

Detailed Product Overview

This Sunsong power steering return line hose assembly, part number 3404481, is made for the cooler-to-reservoir upper return path on 2010-2019 Toyota 4Runner and 2010-2019 Lexus GX460 models. It is designed to match the original routing and connection style for the return side of the steering system, helping maintain proper fluid transfer from the cooler back to the reservoir. This part cross-references Gates 352972 for the same application.

What This Hose Helps Address

• Leaking or cracked power steering return hose
• Corrosion on original steel tubing
• Fluid seepage at the return-side hose connection
• Restricted or deteriorated return line routing
• Noise or steering performance issues related to low fluid level from hose wear

Installation Notes

Fits 2010-2019 Toyota 4Runner, cooler to reservoir (upper). Fits 2010-2019 Lexus GX460, cooler to reservoir (upper). Verify hose routing, connection style, and overall length before installation. Inspect adjacent clamps, seals, and mounting points for wear, since return-line service often exposes aging components nearby. Part number 3404481 should be matched to the vehicle’s original return-line configuration before replacement.

Quality Assurance

Sunsong states that its return hoses exceed original equipment performance standards and are built for low-pressure, high-temperature operation. The hose assembly uses high-grade steel tubing with zinc coating to improve resistance to humidity, road salt, water, and grime.