Sunsong 3403257 Power Steering Pressure Line Hose Assembly

Power Steering Pressure Line for Colorado and Canyon

This Sunsong power steering pressure line hose assembly is built for direct replacement on select Chevrolet Colorado, GMC Canyon, and Isuzu i-290 applications. Part number 3403257 is engineered to restore proper hydraulic steering pressure with fitment-specific ends and corrosion-resistant steel tubing.

Key Features

• Direct-fit power steering pressure line hose assembly
• 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 rust and corrosion resistance
• CSM hose material with steel line construction
• End 1 fitting: Captive O-Ring
• End 2 fitting: Male Inverted Flare
• Length: 41.75 in. (1060 mm)

Detailed Description

Sunsong 3403257 is a power steering pressure line hose assembly made to match the original routing and connection style used on select GM compact trucks and SUVs. It is compatible with 2007-2012 Chevrolet Colorado and 2007-2012 GMC Canyon models with Z85 or ZQ8 suspension, plus 2007-2008 Isuzu i-290 with the same suspension setup. It also covers 2006 Chevrolet Colorado and 2006 GMC Canyon with Z71 suspension and late design configuration from VIN #68272519.

The hose assembly uses high-grade steel tubing with zinc coating to help resist road salt, moisture, grime, and other underbody exposure. With a 1,500 psi working pressure rating and 8,700 psi burst rating, part number 3403257 is built for demanding steering system pressure requirements while maintaining OE-style fit and function.

This part cross-references Dorman HELP 55244 and Gates 365928 for the same application.

What It Helps Address

• Power steering fluid leaks from a worn or damaged pressure line
• Loss of steering assist caused by pressure loss in the hydraulic circuit
• Noise or stiffness from a restricted or deteriorated hose assembly
• Corrosion-related failure on exposed steel steering lines
• Fitment issues after replacing a damaged original pressure hose

Installation Notes and Tips

Verify the vehicle’s suspension code and, for 2006 models, confirm late design fitment from VIN #68272519 before ordering. Match the end fittings and hose length to the original line routing, and inspect adjacent seals, clamps, and steering components for wear before installation. After installation, check the system for leaks and confirm proper steering assist operation.

Quality Assurance

Each Sunsong pressure hose is pressure tested before it leaves the factory to help ensure consistent performance and trouble-free installation. The assembly is precision engineered for exact fit and built to restore worn wearable sections of the steering line to original condition.