Originally Posted by
bmorgil
Mike, all Dana axles were marked with a Bill of Material and a serial number. They can be very, very difficult to find on a heavily rusted axle but, they are always there. Sometimes forensic techniques are needed to see them. They were stamped in by hand on the assembly line. I have used varying ways to uncover them. Most people give up too early. The numbers are always there and always very hard to see. A thorough cleaning and carefully polishing of the area where the numbers should be usually reveals the indentations. If you are successful in finding the numbers, I can tell you what parts were used to build the entire assembly, when it was built and for what customer.