Sunsong 3404951 Power Steering Hose Assembly

OE-Style Power Steering Hose Assembly

Sunsong 3404951 is an exact replacement power steering hose assembly for select Lexus applications. It combines the pressure hose and return hose in a pre-assembled layout to simplify service on Lexus GS400, GS430, and SC430 models.

Built for direct-fit replacement, this assembly restores the original hose routing and connection points while helping reduce labor time compared with sourcing individual hoses separately.

Key Features

• Exact replacement for the original equipment pressure hose and return hose assembly
• Pre-assembled hose layout for a more straightforward installation
• Precision-engineered fit for select Lexus GS400, GS430, and SC430 applications
• Pressure hose rated for 1,500 psi maximum working pressure
• Burst pressure rating of 8,700 psi and tensile strength of 1,600 lb.
• Constructed with CSM hose material for durability
• End 1 features a 16 mm banjo fitting
• Overall length: 78.7 in. (2000 mm)

Detailed Description

This Sunsong power steering hose assembly is engineered as a direct OE-style replacement for Lexus steering systems that require an OEM-type pressure and return assembly. Part number 3404951 is built to restore proper fluid routing and original hose configuration on 1998-2000 Lexus GS400, 2001-2005 Lexus GS430, and 2002-2010 Lexus SC430 models. The assembly is designed around the original fitment requirements and includes the hose construction and connection style needed for a clean replacement service.

The pressure hose is built to exceed original equipment performance standards, with a 1,500 psi maximum working pressure, 8,700 psi burst pressure, and 1,600 lb. tensile strength. This makes Sunsong 3404951 a practical choice for Lexus GS400 power steering hose replacement, Lexus GS430 pressure hose service, and Lexus SC430 steering hose repair where correct routing and pressure handling matter.

This part cross-references 4441030410 for the same application.

What It Helps Fix

• Power steering fluid leaks from a worn or damaged hose assembly
• Loss of steering assist caused by pressure-side hose failure
• Noisy steering operation related to fluid loss or restricted flow
• Incorrect hose routing after prior repair work
• Service delays when the pressure and return hoses are sourced separately

Installation Notes

• Verify vehicle fitment by year, make, and model before installation.
• Inspect surrounding steering components, fittings, and seals for wear before reassembly.
• Confirm the banjo fitting size and hose routing match the original configuration.
• Follow the vehicle service procedure for bleeding the power steering system after installation.

Quality Assurance

Every pressure hose is high-pressure tested at the factory before shipment to help ensure proper operation after installation. Sunsong 3404951 is engineered to restore original-condition wearable components where applicable and to meet the pressure demands of the steering system.