Sunsong 3402160 Power Steering Return Line Hose Assembly - Cooler To Pump or Gear To Pump

Power Steering Return Hose for GM Vans

The Sunsong 3402160 power steering return line hose assembly is built for low-pressure, high-temperature return-side service in select Chevrolet and GMC vans. It is engineered for exact fitment on applications such as the Chevrolet G10, G20, G30 and GMC G1500, G2500, G3500 with cooler-to-pump or gear-to-pump routing.

With a 250 psi maximum working pressure, CSM hose material, and corrosion-resistant steel tubing with zinc plating, this return hose assembly is built to restore proper steering fluid routing on the vehicle.

Key Features

• Part number: 3402160
• Power steering return line hose assembly for select Chevrolet and GMC applications
• Max working pressure: 250 psi for low-pressure return-side operation
• CSM hose material for high-temperature service
• Steel tubing with zinc coating for resistance to rust, road salt, water, humidity, and grime
• End fittings: 3/8 in ID hose and 16 mm male O-ring
• Length: 87.3 in. (2217 mm)
• Precision-engineered for exact fit on listed vehicles

Detailed Description

Sunsong 3402160 is a direct-fit power steering return hose assembly for GM full-size vans that use return-side steering plumbing between the gear, cooler, and pump. It is listed for 1987-1991 Chevrolet G10, G20, and G30 as well as 1987-1991 GMC G1500, G2500, and G3500 applications, including gear-to-pump and cooler-to-pump configurations. This part cross-references Dayco 70045 and Gates 368080 for the same application.

The hose assembly uses high-grade steel tubing with zinc electroplating to help resist corrosion in harsh underbody conditions. The return hose is built to OE-level dimensional requirements and includes the specified hose ends for proper connection on the listed GM van platforms.

What This Hose Helps Fix

• Power steering fluid leaks at the return line
• Cracked, hardened, or deteriorated hose material
• Corrosion on steel return tubing
• Restricted steering fluid return flow
• Noise or poor steering feel caused by a failing return hose assembly

Installation Notes and Tips

Verify the vehicle’s routing before installation, since the listed applications include both gear-to-pump and cooler-to-pump positions. Match the end fittings, hose length, and connection style to the original hose on the vehicle. Inspect nearby brackets, grommets, heat shields, bushings, and sleeves during service and replace worn components as needed to restore the steering system to original condition.

Quality Assurance

Sunsong return hoses are manufactured to exceed original equipment performance standards for return-side steering service. The steel tubing is zinc plated for added corrosion resistance, and the assembly is precision engineered for the listed Chevrolet G10, G20, G30 and GMC G1500, G2500, G3500 applications.