Dana Differential Tag Decoder - Axle Ratio, BOM & Limited Slip ID Diagram

This document is a labeled reference diagram titled "Dana Differential Tags," showing how to decode the metal identification tags found on Dana differential/axle assemblies. Two tag formats are illustrated side by side. The first (left) tag layout shows the gear Ratio in the upper left (format "0 00"), the Axle Assembly number with its Suffix in the upper right (format "0000-000"), the Bill of Material number on the lower left (format "000000-00"), and an "L-S" marking on the lower right that appears only on limited slip assemblies. The second (right) tag layout shows a Dealer ID Code number in the upper left (format "00000000"), an "LS" marking in the upper right (again only on limited slip assemblies), the Ratio in the lower left ("0 00"), and the Bill of Material number in the lower right ("000000-0"). Both tags are drawn as rectangular plates with mounting holes at each end. A reader can use this chart to locate and interpret the stamped fields on their Dana axle tag, identifying the axle ratio, bill of material number, axle assembly number, and whether the axle was built as a limited slip unit. The document itself states no year, make, or model applicability.