HomeSteering > Power Steering Hoses, Pumps, and Related ComponentsSunsong 3402739 Power Steering Return Line Hose Assembly - Gear To Cooler
Part #: 3402739

Sunsong 3402739 Power Steering Return Line Hose Assembly - Gear To Cooler

Gear To Cooler
⚙️ 7 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Hummer, H3 and H3T
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Overview of Sunsong Power Steering Return Line Hose Assembly

The Sunsong 3402739 power steering return line hose assembly is designed specifically for Hummer H3 and H3T models. This 20-inch hose features durable CSM material and precise fittings to ensure reliable fluid return in your vehicle's power steering system.

  • Compatible with Hummer H3 and H3T power steering systems
  • 20-inch (508 mm) length for exact fitment
  • Constructed from CSM hose material for durability and flexibility
  • End 1 fitting: 3/8 inch ID hose type
  • End 2 fitting: 11 mm male captive o-ring
  • No bracket included
  • Part number 3402739 for accurate identification

Detailed Product Description

The Sunsong power steering return line hose assembly (part number 3402739) is engineered to meet the specifications required by Hummer H3 and H3T vehicles. The hose is made from chlorosulfonated polyethylene (CSM), a material known for its resistance to heat, oil, and abrasion, which is critical for maintaining the integrity of the power steering fluid return path. The assembly measures 20 inches (508 mm) in length, providing a precise fit without the need for modifications.

Fittings are designed for secure connections: one end features a 3/8 inch inside diameter hose fitting, while the other end has an 11 mm male captive o-ring fitting. This configuration ensures leak-free operation and compatibility with the original power steering components. The absence of a bracket means this hose is intended to be installed using existing mounting points on the vehicle.

Common Applications and Problem Resolution

  • Replacement of worn or cracked power steering return hoses on Hummer H3 and H3T
  • Eliminates power steering fluid leaks caused by damaged return lines
  • Restores proper fluid flow to prevent steering system noise or stiffness
  • Prevents contamination and maintains hydraulic pressure in the power steering system
  • Addresses issues related to hose swelling or hardening due to age or heat exposure

Installation Notes and Tips

When installing the Sunsong 3402739 power steering return line hose assembly, ensure the vehicle is safely supported and the power steering system is depressurized. Verify that the hose length and fittings match the original equipment to avoid leaks or improper fitment. Use appropriate tools to secure the 3/8 inch ID hose end and the 11 mm male captive o-ring fitting. Inspect all connections for tightness and check for leaks after installation. Refer to technical tips TT1000, TT1001, and TT1002 for additional guidance.

Quality Assurance and Warranty

Sunsong power steering hoses are manufactured to meet or exceed OEM standards for durability and performance. The 3402739 hose assembly undergoes rigorous quality control to ensure reliable operation in Hummer H3 and H3T vehicles. While specific warranty details are not provided, Sunsong products typically come with a limited warranty against defects in materials and workmanship.

BrandSunsong
Part Number3402739
Bracket (Y/N)N
End 1 Fitting Size (in)3/8
End 1 Fitting TypeId hose
End 2 Fitting Size (mm)11
End 2 Fitting TypeMale captive o-ring
Hose Material 1Csm
Length (in)20
Length (mm)508
PS Switch Port (Y/N)N
Tech TipTt1000|tt1001|tt1002

This part fits 7 vehicles. Search below:

YearMakeModelPositionNotes
2010HummerH3Gear To Coolerw/ Left Hand Drive, w/ Finned Cooler
2010HummerH3TGear To Coolerw/ Left Hand Drive, w/ Finned Cooler
2009HummerH3Gear To Coolerw/ Left Hand Drive, w/ Finned Cooler
2009HummerH3TGear To Coolerw/ Left Hand Drive, w/ Finned Cooler
2008HummerH3Gear To Coolerw/ Left Hand Drive, w/ Finned Cooler
2007HummerH3Gear To Coolerw/ Left Hand Drive, w/ Finned Cooler
2006HummerH3Gear To Coolerw/ Left Hand Drive, w/ Finned Cooler

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

352231522380657

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.