Sunsong 3404297 Power Steering Return Line Hose Assembly - To Reservoir

Sunsong 3404297 Return Hose for Lexus RX350

The Sunsong 3404297 power steering return line hose assembly is built for low-pressure, high-temperature return-side service and direct replacement use. It is engineered for 2007-2009 Lexus RX350 models with a to-reservoir routing, making it a focused match for common power steering return hose replacement needs.

Key Features

• Fits 2007-2009 Lexus RX350, to reservoir
• Bubble flare end 1 fitting for the specified application
• CSM hose material for return-line service
• 31.3 in. (796 mm) length
• Max working pressure rated at 250 psi
• High-grade steel tubing with zinc electroplating for corrosion resistance
• Precision-engineered to match the original routing and fitment requirements

Detailed Product Overview

Sunsong 3404297 is a power steering return line hose assembly made for the return side of the steering system on the Lexus RX350. It is built to OE-level performance expectations for low-pressure hydraulic return flow and uses steel tubing with a zinc coating to resist rust and corrosion from humidity, road salt, water, and grime. The 31.3-inch hose length and bubble flare fitting support the specified reservoir-side application, while the CSM hose material handles elevated temperatures commonly seen in steering system service.

This part cross-references Toyota/Lexus OE application 4440648130 for the same vehicle use. For shoppers searching for a Lexus RX350 power steering return hose assembly, Sunsong 3404297 provides a direct-fit replacement reference for the 2007-2009 Lexus RX350, to reservoir.

Common Repair Symptoms

• Power steering fluid leaking from the return line
• Cracked, hardened, or heat-damaged hose material
• Corrosion on the steel line section
• Steering fluid odor or visible wetness near the reservoir connection
• Loss of steering assist caused by return-side fluid loss

Installation Notes

Verify routing, fitting style, and reservoir connection before installation. Inspect adjacent seals, bushings, grommets, heat shields, and protective sleeves on the vehicle and replace worn components as needed to restore the original hose path and reduce heat or abrasion exposure. After installation, check the system for leaks and confirm proper fluid level and steering operation.

Quality Assurance

Sunsong manufactures this return hose assembly to meet original equipment performance standards for the specified application. The steel tubing is zinc electroplated to improve resistance to corrosion and rust in harsh underbody conditions.