Identify the rear axles of a Dodge by visual cues, vehicle application and Dana Spicer axel numbers. Dodge trucks commonly use Dana Spicer axles, identified by numbers that correspond to the relative size of the axle and American Axle Manufacturing axles, identified by the size of the ring gear.
A differential identification tool such as DiffWizard.com helps narrow available axles by year, make, model and drive type. Visual identification markers include the number of differential cover bolts, bolt-in or c-clip style axles, axle splines and the presence of a pinion support. Dana Spicer axles typically have similar visual identifiers, requiring use of the build of materials number, which is typically etched into the axle housing. The build of material number can be identified with the identification tool at Dana.com.