Sunsong 3404346 Power Steering Pressure Line Hose Assembly
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Sunsong

Sunsong 3404346 Power Steering Pressure Line Hose Assembly

Brand Sunsong 3404346
Bracket (Y/N) N
End 1 Fitting Size (mm) 16
End 1 Fitting Type Male o-ring
End 2 Fitting Size (mm) 18
End 2 Fitting Type Male o-ring
Hose Material 1 Csm
Length (in) 38.5
Length (mm) 977
PS Switch Port (Y/N) N
Tech Tip Tt1000
Fits Hummer · 2 vehicles

Exact-fit assembly. Precision engineered for trouble-free installation and operation.

Zinc-coated steel tubing. Helps resist corrosion and rust from humidity, salt, water, and grime.

High-pressure tested. Built to exceed original equipment performance standards.

Cross-references Dorman - HELP 80875, Gates 352473 and 5473 for the same application. See all 3.

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Not what you need? See all Power Steering Pressure Line Hose Assembly options

Power Steering Pressure Line for Hummer H2

Sunsong 3404346 is a power steering pressure line hose assembly built for 2008-2009 Hummer H2 applications. It is engineered to meet demanding steering-system pressure requirements while maintaining an exact-fit layout for straightforward replacement.

  • Fits 2008-2009 Hummer H2
  • Power steering pressure line hose assembly
  • End 1 fitting: 16 mm male O-ring
  • End 2 fitting: 18 mm male O-ring
  • 38.5 in. (977 mm) hose length
  • CSM hose material for steering-fluid service
  • Cross-reference: Dorman - HELP 80875
  • Cross-reference: Gates 352473

Built for Steering Pressure

This Sunsong pressure hose is designed for the hydraulic demands of the power steering system and is rated for a 1,500 psi maximum working pressure, 8,700 psi burst pressure, and 1,600 lb tensile strength. The hose assembly uses high-grade steel tubing with zinc electroplating to improve resistance to corrosion from humidity, road salt, water, and grime. For 2008-2009 Hummer H2 service, part number 3404346 provides a direct replacement format with male O-ring ends sized to match the application.

Common Replacement Reasons

  • Steering fluid leaks at the pressure hose
  • Cracked, hardened, or swollen hose material
  • Corrosion on steel tubing or fittings
  • Loss of steering assist from pressure-line failure
  • Noise or inconsistent steering response caused by hose deterioration

Installation Notes

Verify the 16 mm and 18 mm male O-ring end sizes before installation and compare the 38.5 in. hose length to the original routing on the vehicle. Inspect mating surfaces, seals, and nearby steering components for wear or contamination before connecting the new hose. Confirm the line follows the factory path on the Hummer H2 to avoid contact with heat sources or moving parts.

Quality Assurance

Each hose is pressure-tested before it leaves the factory to confirm proper operation and installation readiness. Sunsong 3404346 is manufactured to exceed original equipment performance standards for pressure-line service on the Hummer H2.

Related reading

This part fits 2 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelNotes
2009HummerH2—
2008HummerH2—
Directly replaces or cross-references 3 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Dorman - HELP — 80875Gates — 3524735473