Sunsong 3402001 Power Steering Return Line Hose Assembly

Sunsong 3402001 Power Steering Return Hose

The Sunsong 3402001 power steering return line hose assembly is built for low-pressure, high-temperature return-side service and is engineered to match original equipment fitment. It is a direct replacement for select Chevrolet Caprice, Impala, and Commercial Chassis applications with cooler-equipped steering systems.

Key Features

• Power steering return line hose assembly for return-side fluid routing
• Max working pressure of 250 psi for low-pressure return applications
• CSM hose material for durability in demanding underhood conditions
• End connections: 3/8 in. ID hose and 16 mm male O-ring
• Precision-engineered to exact fit for the listed Chevrolet applications
• Cross-reference part numbers include Dayco 70039 and Gates 370560

Detailed Description

This Sunsong power steering return hose, part number 3402001, is made for vehicles that use a cooler in the steering return circuit. It is a direct-fit replacement for 1994 Chevrolet Caprice, 1994 Chevrolet Commercial Chassis, 1994-1996 Chevrolet Impala, and 1995-1996 Chevrolet Caprice. The hose is designed for return-side operation where fluid moves under low pressure but can see elevated temperatures during normal steering use.

Built with CSM hose material and OE-style end fittings, the 3402001 helps restore proper fluid routing in the power steering system. The part number 3402001 is also referenced by other aftermarket listings for the same application, making it easier to confirm the correct replacement before ordering.

What It Helps Address

• Power steering fluid leaks at the return hose
• Cracked or hardened hose material from heat exposure
• Corrosion-related deterioration in the return line assembly
• Improper steering fluid routing on cooler-equipped systems
• Loss of steering assist caused by return-side hose failure

Installation Notes and Tips

Verify the vehicle’s steering system uses the cooler-equipped return line configuration before installation. Match the end fittings carefully: 3/8 in. ID hose on one end and a 16 mm male O-ring on the other. Confirm routing, length, and connection points against the original hose assembly on the vehicle.

Compatible With 1994 Chevrolet Caprice, 1994 Chevrolet Commercial Chassis, 1994-1996 Chevrolet Impala, and 1995-1996 Chevrolet Caprice. This part number, 3402001, is intended for the listed return-line applications only.

Quality Assurance

Sunsong manufactures this hose assembly to exceed original equipment performance standards for return-hose service. The tubing is built from high-grade steel with zinc electroplating for added resistance to rust and corrosion from humidity, road salt, water, and grime.