The BMW Clutch Alignment Tool is required to center your E46 M3, E39 540i (97-98), or E31 850i/850CSi clutch disc with the pressure plate and pilot bearing during clutch installation.
Don't get stuck in the middle of a clutch job without this necessary tool.
BMW Fitments:
3 Series
E46 (99-05) > M3
5 Series
E39 (97-03) > 540i
8 Series
E31 (91-97) > 850CSi
E31 (91-97) > 850Ci