Sunsong 3402431 Power Steering Pressure Line Hose Assembly

Power Steering Pressure Line Hose Assembly

The Sunsong 3402431 power steering pressure line hose assembly is built for direct replacement on select Buick and Pontiac applications. It is engineered to handle high-pressure steering fluid flow while maintaining a precise OE-style fit for service on the 2005-2009 Pontiac Grand Prix, 2008-2009 Buick Allure, and 2008-2009 Buick LaCrosse.

Key Features

• Pressure hose assembly for power steering systems
• Max working pressure: 1,500 psi
• Burst pressure rating: 8,700 psi
• Tensile strength: 1,600 lb
• High-grade steel tubing with zinc electroplating for corrosion resistance
• Precision-engineered fit for original-equipment-style routing and connection points
• CSM hose material for durability in steering system service
• End fittings: 16 mm male O-ring and 18 mm male O-ring
• Length: 58.8 in. (1493 mm)

Detailed Description

Sunsong 3402431 is a power steering pressure line hose assembly made for vehicles that require a reliable high-pressure steering connection. It is built with steel tubing protected by a zinc coating to resist rust and corrosion from humidity, road salt, water, and grime. The hose is precision engineered to match the original routing and connection style, helping restore proper steering fluid transfer on the Pontiac Grand Prix, Buick Allure, and Buick LaCrosse.

This part cross-references Four Seasons 55194 and Gates 365673 for the same application. The Sunsong 3402431 part number is also referenced in interchange listings for select steering hose replacements.

Common Problems This Part Can Help Solve

• Power steering fluid leaks from a worn or damaged pressure hose
• Loss of steering assist caused by pressure line failure
• Noise or stiffness in the steering system related to restricted fluid flow
• Corrosion-related hose deterioration in high-exposure driving conditions
• Poor fitment from an incorrect replacement hose

Installation Notes and Tips

Verify the 16 mm male O-ring and 18 mm male O-ring end connections before installation. Confirm hose length and routing against the original line to ensure proper clearance around heat and moving components. This assembly does not include a PS switch port and does not use a bracket.

Compatible With 2005-2008 Pontiac Grand Prix, 2008-2009 Buick Allure, and 2008-2009 Buick LaCrosse. For best results, inspect related steering seals and fittings during replacement to confirm the system is clean and leak-free before refilling and bleeding the power steering system.

Quality Assurance

Each hose is pressure tested before leaving the factory to confirm performance and help support trouble-free installation and operation. Sunsong builds this pressure line to exceed original equipment performance standards for strength, pressure handling, and corrosion resistance.