Sunsong 3404257 Power Steering Return Line Hose Assembly

Power Steering Return Hose for Lexus GS300

The Sunsong 3404257 power steering return line hose assembly is built for low-pressure, high-temperature return-side service. It is a direct-fit replacement for select 1999-2000 Lexus GS300 applications and is engineered to restore proper steering fluid routing with OE-style fitment.

• Power steering return line hose assembly for return-side fluid flow
• Max working pressure of 250 psi for low-pressure steering return circuits
• CSM hose material for durability in demanding underhood conditions
• 17 mm banjo fitting on end 1
• 84.8 in. overall length for application-specific routing
• Built for 1999-2000 Lexus GS300, upper position
• Part number 3404257 for easy identification and ordering

Application and Construction Details

Sunsong 3404257 is a power steering return line hose assembly made for the 1999-2000 Lexus GS300, upper position. The hose is designed to meet original equipment performance expectations for return-side steering fluid transfer, with steel tubing protected by zinc electroplating for added resistance to corrosion, rust, road salt, water, humidity, and grime. The 17 mm banjo end fitting and 84.8-inch length support proper routing on the specified Lexus GS300 fitment. This part cross-references Toyota 4441030430 for the same application.

Common Steering Problems This Part Addresses

• Leaking or cracked power steering return hose
• Fluid seepage at the hose connection point
• Corrosion on the original return line assembly
• Steering fluid loss from aged rubber or tubing
• Improper hose routing on a worn OE-style line

Installation Notes and Tips

Verify the vehicle is a 1999-2000 Lexus GS300 before ordering. Confirm the upper-position routing, 17 mm banjo connection, and overall hose length against the original part before installation. Inspect adjacent steering components, clamps, and sealing surfaces for wear so the replacement line can be installed on a clean, leak-free system. Part number 3404257 should be matched to the vehicle’s original return line configuration.

Quality Assurance

Sunsong manufactures this return hose assembly to exceed original equipment performance standards for return-side steering service. The steel tubing and zinc-coated finish are specified to improve resistance to corrosion and environmental exposure, supporting long-term durability in everyday driving conditions.