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Hummer 12479242 Front Differential Case

2006-2010 Hummer

Customer Questions & Expert Answers (3)
12479242 GM Front Differential Case Illustration 1 of 1
  • Part Description
    Case,Front Differential
  • Position
    Front
  • Manufacturer
    General Motors
  • Manufacturer's Notes
    This part is discontinued.
Make sure this part fits
  • Related Parts
  • Specifications
  • Fitment
  • Q&A
  • Product Specifications

    BrandGenuine Hummer
    Manufacturer Part Number12479242
    Part DescriptionCase,Front Differential
    Other NamesCase, Differential Case
    Item Dimensions7.9 x 7.4 x 7.4 inches
    Item Weight8.00 Pounds
    PositionFront
    ConditionNew
    Fitment TypeDirect Replacement
    ManufacturerGeneral Motors
    SKU12479242
    WarrantyThis genuine GM part is guaranteed by GM's factory warranty.
    Shipping & ReturnShipping Policy Return Policy
    Warning: California's Proposition 65
  • Vehicle Fitment

    Year Make Model Engine Important vehicle option details
    2006-2010 Hummer H35 Cyl 3.5L, 5 Cyl 3.7LCREW CAB, SUV
    2009-2010 Hummer H3T5 Cyl 3.7LCREW CAB, SUV
  • Customer Questions & Expert Answers

    Q:
    I'm wondering if this is complete and correct part for my vehicle.
    A:
    You can Select Your Vehicle to check if 12479242 fits your vehicle.
    Posted and answered by GM Parts Specialist Julian
    Q:
    What should you do after disconnecting the battery cable for the Differential in the 2004 Chevrolet Colorado? Posted by Verified Customer
    A:
    Loosen the front wheel lug nuts. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Nicholas / Jul 13, 2026
    Q:
    What should you do with the Differential after removing the driveaxles for the 2008 GMC Canyon? Posted by Nachum W.
    A:
    Disconnect the electrical connector from the front axle actuator motor. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Raul / Feb 14, 2023

Genuine GM Part 12479242, the Right Choice

To ensure reliability, purchase GM part # 12479242 Front Differential Case. It is sometimes referred to as Hummer Differential. Directly from GM, genuine parts are superb with regards to quality, longevity, and fit. Every single part passed stringent quality testing, so you can be sure that it's safe, durable, and built to perform like your original parts. This part fits specific Hummer H3, H3T models.

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