Sunsong 3404110 Power Steering Return Line Hose Assembly - Gear To Reservoir

Sunsong 3404110 Power Steering Return Hose

The Sunsong 3404110 power steering return line hose assembly is built for low-pressure, high-temperature return-side service and is engineered to match original equipment fit and routing. It is a direct replacement for select Cadillac, Pontiac, and Oldsmobile applications, including Cadillac DeVille, Cadillac Seville, Pontiac Bonneville, and Oldsmobile Aurora models.

Key Features

• Power steering return line hose assembly for gear-to-reservoir routing
• Max working pressure of 250 psi for return-side hydraulic service
• High-grade steel tubing with zinc electroplating for corrosion resistance
• CSM hose material for durability in heat-exposed steering systems
• Precision-engineered fit to restore original routing and function
• End connections: 3/8 in. ID hose and 16 mm male O-ring
• Length: 114.25 in. (2902 mm)

Detailed Description

Sunsong 3404110 is a power steering return line hose assembly made for vehicles that use a gear-to-reservoir return path. It is engineered to meet or exceed original equipment performance standards for low-pressure, high-temperature operation, with tubing formed from high-grade steel and protected by zinc plating to resist rust, road salt, moisture, and grime. This part number, 3404110, is a direct-fit replacement for applications such as 2000-2005 Cadillac DeVille, 2000-2004 Cadillac Seville, 2004-2005 Pontiac Bonneville, and 2001-2003 Oldsmobile Aurora.

This part cross-references Dayco 85031 and Gates 366221 for the same application.

Vehicle Fitment

• Fits 2000-2005 Cadillac DeVille, Gear To Reservoir
• Fits 2000-2004 Cadillac Seville, Gear To Reservoir
• Fits 2004-2005 Pontiac Bonneville, Gear To Reservoir
• Fits 2001-2003 Oldsmobile Aurora, Gear To Reservoir

What It Helps Fix

• Power steering fluid leaks from a worn return hose
• Cracked or hardened hose material from heat exposure
• Corrosion on steel tubing caused by moisture or road salt
• Improper routing or fitment from a damaged original line
• Steering system noise or fluid loss related to return-side hose failure

Installation Notes and Tips

Verify the vehicle’s steering layout before ordering, since this hose is for gear-to-reservoir applications only. Match the end fittings, overall length, and routing points to the original line, and inspect nearby brackets, grommets, heat shields, bushings, and protective sleeves during replacement if the vehicle uses them.

Quality Assurance

Sunsong manufactures this return hose assembly with OE-style fitment and corrosion-resistant materials to support reliable steering system service. The 3404110 is built to restore the original hose path and maintain proper return-line operation in the specified Cadillac, Pontiac, and Oldsmobile applications.