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4x2
- Chassis Cab
  - 11.5" rear axle
    - dual rear wheels
    - single rear wheels
  - 12" rear axle
- Pickup
  - 11.5" rear axle
    - dual rear wheels
      - air suspension
        3.73 ratio
        4.10 ratio
      - Without air suspension
        3.73 ratio
        4.10 ratio
    - single rear wheels
      - air suspension
        3.73 ratio
        4.10 ratio
      - Without air suspension
        3.73 ratio
        4.10 ratio
  - 12" rear axle
    - dual rear wheels
      - air suspension
        3.73 ratio
        4.10 ratio
      - Without air suspension
        3.73 ratio
        4.10 ratio
    - single rear wheels
      - (3.73 ratio)
        air suspension
        Without air suspension
4x4
- Chassis Cab
  - 11.5" rear axle
    - dual rear wheels
      - 3.73 ratio
      - 4.10 ratio
      - 4.44 ratio
    - single rear wheels
  - 12" rear axle
- Pickup
  - 11.5" rear axle
    - dual rear wheels
      - air suspension
        3.73 ratio
        4.10 ratio
      - Without air suspension
        3.73 ratio
        4.10 ratio
    - single rear wheels
      - air suspension
        3.73 ratio
        4.10 ratio
      - Without air suspension
        3.73 ratio
        4.10 ratio
  - 12" rear axle
    - dual rear wheels
      - air suspension
        3.73 ratio
        4.10 ratio
      - Without air suspension
        3.73 ratio
        4.10 ratio
    - single rear wheels
      - (3.73 ratio)
        air suspension
        Without air suspension

Rear Axle Assembly for 2021 Dodge RAM 3500

Fits: 4x4 Chassis Cab 11.5 rear axle dual rear wheels 3.73 ratio (change)

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