HomeSteering > Power Steering Hoses, Pumps, and Related ComponentsSunsong 3402479 Power Steering Return Line Hose Assembly - Gear To Reservoir
Part #: 3402479

Sunsong 3402479 Power Steering Return Line Hose Assembly - Gear To Reservoir

Gear To Reservoir
7 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$39.04Free Shipping
Free ShippingNo Cost to Continental U.S.
Free Returns*Wrong fit? No cost
60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Hummer, H3 and H3T
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Sunsong Power Steering Return Line Hose Assembly

The Sunsong 3402479 power steering return line hose assembly is designed specifically for Hummer H3 and H3T models. Engineered to meet OEM specifications, this hose assembly ensures reliable fluid return in your vehicle's power steering system.

  • Compatible with Hummer H3 and H3T power steering systems
  • Length: 73.3 inches (1861 mm) for precise fitment
  • End 1 fitting: 3/8 inch ID hose connection
  • End 2 fitting: 11 mm male captive o-ring
  • Constructed with durable CSM hose material for heat and abrasion resistance
  • No bracket included, designed for direct replacement
  • Part number 3402479 for accurate identification

Detailed Product Description

This Sunsong power steering return line hose assembly (part number 3402479) is manufactured with high-quality chlorosulfonated polyethylene (CSM) hose material, providing excellent resistance to heat, oil, and abrasion. The hose measures 73.3 inches (1861 mm) in length, ensuring a proper fit for the power steering return circuit in Hummer H3 and H3T vehicles. The assembly features a 3/8 inch inner diameter hose fitting on one end and an 11 mm male captive o-ring fitting on the other, facilitating secure and leak-free connections. This hose does not include a bracket or a power steering switch port, aligning with the original equipment design for these models.

Applications and Common Issues Addressed

  • Replacement of worn or cracked power steering return hoses in Hummer H3 and H3T
  • Eliminates power steering fluid leaks caused by damaged hose fittings or material degradation
  • Restores proper fluid flow to maintain steering performance and reduce pump strain
  • Prevents overheating and hose failure due to durable CSM construction
  • Addresses issues related to improper hose length or fitting incompatibility

Installation Notes and Tips

  • Ensure the vehicle is cooled and pressure is relieved from the power steering system before installation
  • Verify hose length and fitting types match the original equipment to avoid leaks
  • Use appropriate tools to secure the 3/8 inch ID hose and 11 mm male captive o-ring fittings
  • Inspect surrounding components for wear or damage during replacement
  • Refer to technical tips TT1000 and TT1001 for additional installation guidance

Quality Assurance and Warranty

Sunsong power steering hoses are manufactured to meet or exceed OEM standards for durability and performance. The 3402479 hose assembly undergoes rigorous quality control to ensure reliable operation in Hummer H3 and H3T vehicles. While specific warranty details may vary, Sunsong products typically include coverage against manufacturing defects. Consult product documentation or authorized sources for exact warranty terms.

BrandSunsong
Part Number3402479
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)73.3
Length (mm)1861
Tech TipTT1000|TT1001

This part fits 7 vehicles. Search below:

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

* 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:

3658355508992427

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