Sunsong 3402373 Power Steering Return Line Hose Assembly - Cooler To Reservoir

Power Steering Return Hose Assembly

Sunsong 3402373 is a power steering return line hose assembly for low-pressure return-side service. It is built for the cooler-to-reservoir route on select Buick, Pontiac, and Oldsmobile applications, including Buick Rendezvous, Pontiac Montana, Pontiac Aztek, and Oldsmobile Silhouette.

For buyers searching for a power steering return hose for 2002-2007 Buick Rendezvous or a return line hose assembly for Pontiac Montana and Pontiac Aztek, this part number 3402373 provides an OE-style replacement with application-specific dimensions and fittings.

• Return hose assembly for low-pressure, high-temperature steering fluid routing
• 3/8 in. ID hose fittings at both ends
• 29.6 in. overall length for cooler-to-reservoir routing
• CSM hose material for fluid handling and heat resistance
• Built to restore worn return-side steering plumbing on listed vehicles
• Cross-reference: Gates 365575

Detailed Product Overview

This Sunsong power steering return line hose assembly is engineered to meet original equipment performance standards for the return side of the steering system. The hose is designed for a maximum working pressure of 250 psi and is suitable for low-pressure, high-temperature operation. It uses high-grade steel tubing with zinc electroplating for added resistance to corrosion, rust, humidity, road salt, water, and grime. Part number 3402373 is a direct-fit style replacement for the cooler-to-reservoir position on the listed Buick, Pontiac, and Oldsmobile models.

Compatible vehicle applications include 2002-2007 Buick Rendezvous, 2002-2006 Pontiac Montana, 2001-2005 Pontiac Aztek, and 2002-2004 Oldsmobile Silhouette. If you are replacing a leaking or deteriorated power steering return hose on a Buick Rendezvous, Pontiac Montana, or Pontiac Aztek, this assembly is built around the original routing and connection sizes.

What This Part Helps Address

• Power steering fluid seepage from a cracked or aged return hose
• Soft, swollen, or heat-damaged hose material
• Corrosion on the original steel line section
• Restricted steering fluid return flow caused by internal wear
• Noise or steering performance issues related to low fluid level from a leak

Installation Notes

Verify the cooler-to-reservoir routing, 3/8 in. ID hose connections, and 29.6 in. length before installation. Inspect adjacent steering components, clamps, and mounting points for wear or corrosion so the replacement hose can be installed on a clean, properly routed path. Tech Tip: TT1000.

Quality Assurance

Sunsong manufactures this return hose assembly to exceed original equipment performance standards for return-side steering service. The steel tubing is zinc plated for corrosion resistance, and the hose assembly is precision engineered for exact fit on the listed applications. Part number 3402373 is also known under cross-reference applications such as Gates 365575.