* Dana 80: This is a heavy-duty rear axle commonly found in higher-payload and towing capacity models.
* AAM 11.5" (American Axle Manufacturing): Another strong rear axle option, often found in 2500s, though perhaps less common than the Dana 80.
To know for sure what rear end *your specific* 2006 Dodge 2500 Cummins has, you need to check:
* The data plate on the driver's side door jamb: This will list some specifications, potentially including axle ratio.
* The axle itself: Look for a casting number on the differential housing. This number can be cross-referenced online to identify the axle type.
* Your vehicle's build sheet (if you have it): This will definitively state the axle type.
The axle ratio (e.g., 3.73, 4.10) is also important information and is usually found on the data plate or the axle itself. Knowing the ratio helps determine gearing.
