BMW E21 / 2002 LSD Diff Upgrade Service
This is a fully rebuilt E21 or 2002 differential using your original ring and pinion. All bearings and seals are replaced, an LSD is added, and the differential is blueprinted to factory specifications. The case is cleaned and re-painted.
Diff Lab no longer stocks an E21 or 2002 exchange diff. Your original differential must be supplied.
There are three LSD types to suit these differentials. Diff Lab stocks multiple LSDs for these but may have to source the correct LSD if one is not in stock. The narrow type is often not available. The alter E21 style is typically available.