There are 18 choices

Choose One

Without wide track
- brake opt JH6
  - 3.73 ratio (opt GT4)
  - 4.10 ratio (opt GT5)
- brake opt JH7
  - 133" wheelbase
    - 3.73 ratio (opt GT4)
    - 4.10 ratio (opt GT5)
  - 137" wheelbase
    - 3.73 ratio (opt GT4)
    - 4.10 ratio (opt GT5)
  - 157.5" wheelbase
    - 3.73 ratio (opt GT4)
    - 4.10 ratio (opt GT5)
  - 161.5" wheelbase
    - 3.73 ratio (opt GT4)
    - 4.10 ratio (opt GT5)
  - 167" wheelbase
    - 3.73 ratio (opt GT4)
    - 4.10 ratio (opt GT5)
- brake opt JK3
  - 3.73 ratio (opt GT4)
  - 4.10 ratio (opt GT5)
- brake opt JK4
  - 3.73 ratio (opt GT4)
  - 4.10 ratio (opt GT5)
wide track (opt GTY)
- 3.73 ratio (opt GT4)
- 4.10 ratio (opt GT5)

Rear Axle Assembly for 2008 GMC Sierra 3500 HD

Fits: wide track opt GTY 3.73 ratio opt GT4 (change)

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