In this collection, you will find tools to change gear ratio in BMW differentials, install LSD unit from another model, adjust backlash and such.

In case you are using LSD unit from TDS models and wish to combine it with short gear look for Crown gear spacer.

Also the most popular set among E46 owners is here on this page, and that is E30/E36 LSD to E46 diff swap kit. This set contains all parts needed to install the oem (ZF 006) Limited slip differential from E30, E36, E34 etc. in the E46 differential housing.

If you just need to adjust backlash again, we have shims and C clips always available in stock.