Sunsong 3402900 Power Steering Return Line Hose Assembly

Power Steering Return Hose for Colorado and Canyon

Sunsong 3402900 is a power steering return line hose assembly built for low-pressure, high-temperature return-side service. It is engineered for direct fitment on select Chevrolet Colorado, GMC Canyon, and Isuzu i-350 applications, with corrosion-resistant steel tubing and protective components used where required to restore the original routing and protection.

Key Features

• Power steering return line hose assembly for return-side fluid flow
• Max working pressure of 250 psi for low-pressure steering return applications
• CSM hose material with 40.9 in. overall length
• 3/8 in. ID hose end and 11 mm captive O-ring end
• High-grade steel tubing with zinc electroplating for rust and corrosion resistance
• Precision-engineered fit for select Chevrolet Colorado, GMC Canyon, and Isuzu i-350 models
• Part number 3402900 for direct catalog lookup and service matching

Detailed Description

This Sunsong power steering return line hose assembly is built to meet original equipment performance standards for the return side of the steering system. The hose is designed for low-pressure, high-temperature operation and uses corrosion-resistant steel tubing with zinc plating to help withstand humidity, road salt, water, and grime. Sunsong 3402900 is shaped for exact fitment and is intended to restore the original hose routing and related wear points on the vehicle.

Compatible With 2007-2012 Chevrolet Colorado, N/A, w/ Z71 Suspension; 2006 Chevrolet Colorado, N/A, w/ Z71 Suspension, From VIN # 68272519; 2007-2012 GMC Canyon, N/A, w/ Z71 Suspension; 2006 GMC Canyon, N/A, w/ Z71 Suspension, From VIN # 68272519; and 2006 Isuzu i-350, N/A. This part cross-references Four Seasons (e.g., 55238, 55239) for the same application.

Common Issues This Part Can Address

• Leaking or seepage at the power steering return line
• Corrosion on the original return hose or steel tubing
• Cracked, hardened, or heat-damaged hose material
• Improper routing or fit after prior steering line repair
• Noise or fluid loss caused by a deteriorated return-side hose assembly

Installation Notes and Tips

• Verify the vehicle’s suspension configuration and VIN break before ordering.
• Inspect the mating fittings and sealing surfaces before installation.
• Confirm the hose routing matches the original layout to avoid contact with heat or moving components.
• Replace any worn brackets, grommets, heat shields, bushings, or sleeves only when required by the application and existing vehicle condition.
• After installation, check the steering system for leaks and proper fluid level.

Quality Assurance

Sunsong manufactures this return hose assembly to exceed original equipment performance standards for the specified application. The design uses high-grade steel tubing with zinc coating for added resistance to corrosion and rust, supporting long-term service in demanding underhood and underbody conditions.