Sunsong 3401634 Power Steering Return Line Hose Assembly - Gear To Cooler

Power Steering Return Hose for Cadillac Applications

The Sunsong 3401634 power steering return line hose assembly is built for low-pressure, high-temperature return-side service. It is engineered to match original routing and connection points for select Cadillac models, including DeVille, Eldorado, Seville, Allante, and Commercial Chassis applications.

With a 250 psi maximum working pressure and corrosion-resistant steel tubing, this return hose assembly supports dependable steering fluid transfer in demanding underhood conditions. The Sunsong 3401634 is a direct-fit replacement for vehicles that need a precise power steering return line hose assembly.

Key Features

• Power steering return line hose assembly for low-pressure return-side operation
• Maximum working pressure: 250 psi
• High-grade steel tubing with zinc electroplating for rust and corrosion resistance
• CSM hose material for high-temperature service
• End connections: 3/8 in. ID hose and 16 mm male O-ring
• Overall length: 67.4 in. (1711 mm)
• Direct-fit engineering for select Cadillac steering return line applications

Detailed Description

The Sunsong 3401634 is a power steering return line hose assembly designed for select 1993-1995 Cadillac DeVille models and additional 1993 Cadillac applications, including 60 Special, Allante, Commercial Chassis, Eldorado, and Seville. It is built to restore the return path between the steering gear and cooler where listed, with exact-fit routing and connection geometry for the specified vehicles. This part cross-references Edelmann 80118 and Gates 368110 for the same application.

As a replacement steering hose, this assembly uses corrosion-resistant steel tubing with zinc plating to help resist road salt, moisture, grime, and humidity. The hose construction is suited to low-pressure, high-temperature return service, making it a practical choice when replacing a worn or leaking steering return line on Cadillac DeVille and related models. Part number 3401634 is also referenced by interchange numbers 36-368110, 979-5007, 26020181, and 26048968.

What This Part Helps Address

• Power steering fluid seepage from a worn return hose
• Cracked or hardened hose material from heat exposure
• Corrosion on steel tubing and fittings
• Restricted steering fluid return flow
• Noise or steering performance issues related to fluid loss

Installation Notes and Tips

• Verify end fittings before installation: 3/8 in. ID hose on one end and 16 mm male O-ring on the other.
• Confirm routing for the listed position, including gear-to-cooler applications where specified.
• Inspect adjacent steering components, clamps, and cooler lines for wear before installation.
• Use clean power steering fluid and bleed the system after installation to remove trapped air.
• Match the hose to the exact vehicle year, make, model, and position shown in the fitment data.

Quality Assurance

Sunsong manufactures this return hose assembly to exceed original equipment performance standards for return-side steering service. The design focuses on exact fit, corrosion resistance, and durable construction for the listed Cadillac applications.