Axle Identification 1977-1991 GM Dana 60

All 1977-1991 Dana 60 Front Axles in GM 1 ton 4x4 trucks had a Bill of Material Number (BOM) assigned by Dana at the time of manufacture. Th BOM number on 1984-1991 axles is stamped on a Build Tag attached to the differential by two of the differential...

Many Dana Axle have the model number cast somewhere on the cast iron differential housing.

Starting around 1965, Dana started using metal tags affixed to the differential cover by two of the cover bolts. Each tag has a Bill of Material Number (BOM) stamped on it and it is affixed to the axle before it is shipped from the factory. The photo...

We are often asked how a customer can identify if their 4x4 has a Standard-Duty 3/4 ton Front Axle (Dana 44 or GM 10 Bolt) or a Heavy-Duty Axle (Dana 50IFS, Dana 60, Dana 61). There are several ways, but if your axle has an internally splined hub, the...