Check the listing for details. Backlash adjustment shim kit for BMW 188mm Differential (E30 E36 Z3 E34). Condition: New. Listed at 239.00 USD. If you are looking to install LSD, or change gear ratio, or you are just building custom differential for yourself, than you will most certainly need to adjust Backlash properly. To do so properly, this kit is a must have. It contains 10 shims, from 1 to 2 mm thickness range, each thicker than other for 0.1 mm. So you will be able to adjust your diff very precisely unlike with other similar sets on the market. Backlash adjustment is very important. If not done properly, whining noise and crown ring damage may be expected. We offer shim sets for all BMW differentials. If you need any other differential parts, please see our store or send us inquiry.OEM part numbers:33139065734 33-13-9-065-734 33 13 9 065 734 33.13.9.065.734 33139065735 33-13-9-065-735 33 13 9 065 735 33.13.9.065.735 Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 #: BMW, Differential, carrier, preload adjustment, core, position, backlash, teeth contact, LSD swap.