Sunsong 3405590 Power Steering Pressure Line Hose Assembly

Power Steering Pressure Line for Audi TT Quattro

Sunsong 3405590 is a power steering pressure line hose assembly built for direct replacement on select Audi TT Quattro applications. It is manufactured with a built-in silencer for noise elimination and uses CSM hose material for fluid transfer performance in the steering system.

• Power steering pressure line hose assembly for steering fluid delivery
• Built-in silencer for reduced noise in the hydraulic steering circuit
• CSM construction for fluid transfer hose durability
• Banjo fittings: 14 mm end 1 and 16 mm end 2
• Direct-fit application coverage for select Audi TT Quattro models
• Cross-reference part numbers include Dorman HELP 92680 and Gates 366114 for the same application

Application Details

Compatible with 2002-2006 Audi TT Quattro, N/A, and 2001 Audi TT Quattro, N/A from chassis # 8N1014721. This Sunsong 3405590 pressure hose is engineered around exact form, fit, and function requirements for the listed Audi TT Quattro steering system applications. The part number 3405590 is also referenced in aftermarket catalogs for the same vehicle coverage.

Common Steering System Issues

• Power steering fluid leaks at the pressure line
• Whining or noise from the steering hydraulic circuit
• Cracked, hardened, or deteriorated hose material
• Loss of steering assist caused by pressure line failure
• Incorrect fitment when replacing an OE-style Audi TT Quattro hose

Installation Notes

Verify banjo fitting sizes, hose routing, and chassis break information before installation. Confirm the vehicle is within the listed Audi TT Quattro fitment range and inspect sealing surfaces, washers, and adjacent steering components during replacement. The built-in silencer is part of the hose assembly design and should be matched to the original application.

Quality Assurance

Sunsong is a vertically integrated manufacturer focused on automotive fluid transfer hoses and lines, with in-house research, development, and production. The brand emphasizes OE-level form, fit, and function standards for replacement steering hoses, including this 3405590 power steering pressure line hose assembly.