Most 2003 and newer Dodge Ram 4x4 trucks with the American Axle 9-1/4" ring gear beam front axle will have an open differential. An electric locking differential was available on models with 4.56 axle ratios such as the Ram 2500 Power Wagon®. There are two versions of open differentials which are not interchangeable between years. The 1st design open differential fits 2003 to 2006 model years. 2nd design differentials fit 2007 and later axles.








































