Sunsong 3404259 Power Steering Hose Assembly

OE-Style Power Steering Hose Assembly

Sunsong 3404259 is an exact replacement power steering hose assembly for the 2001-2006 Lexus LS430. It combines the pressure hose and return hose in a pre-assembled layout with brackets to reduce installation time and restore the original routing and fit.

Built for the Lexus LS430, this assembly is engineered to match OE dimensions and connection points while replacing wearable components such as grommets, bushings, heat shields, protective sleeves, and switch ports where required by the application.

Key Features

• Exact replacement pressure hose and return hose assembly
• Pre-assembled with brackets for easier installation
• Fits 2001-2006 Lexus LS430, N/A
• 16 mm banjo fittings at both ends
• 90.9 in. (2310 mm) overall length
• CSM hose material for steering system service
• Pressure hose rated to 1,500 psi working pressure
• Burst pressure rating of 8,700 psi
• Tensile strength of 1,600 lb.

Detailed Description

This Sunsong power steering hose assembly is designed as a direct OE replacement for Lexus LS430 pressure and return hose service. Part number 3404259 follows the original hose layout and includes the brackets and related wear items needed to restore the assembly to original condition. The 16 mm banjo fittings and 90.9-inch length support correct routing on the 2001-2006 Lexus LS430, while the CSM hose construction is built for steering system pressure demands. Part number 3404259 is also cross-referenced to 4441050080 for the same application.

Common Problems This Part Can Address

• Power steering fluid leaks from aged hose sections
• Cracked or hardened hose material from heat and age
• Incorrect hose routing after prior repairs
• Steering noise caused by pressure loss in the hydraulic circuit
• Wear at mounting points, grommets, or protective sleeves

Installation Notes and Tips

Verify the banjo fitting size, hose routing, and bracket locations against the original assembly before installation. Replace any worn sealing surfaces and inspect adjacent steering components for fluid contamination or heat damage. Proper routing is important on the Lexus LS430 to avoid contact with moving or hot components.

Quality Assurance

Each pressure hose is pressure tested before leaving the factory. The hose is engineered to exceed original equipment performance targets with a 1,500 psi maximum working pressure, 8,700 psi burst pressure, and 1,600 lb. tensile strength for dependable steering system service.