E36/E46 M3 Diff Cover Washer Upgrade Kit - Suits 33171134872 G31 Touring If you speak in BMW

If you speak in BMW part numbers

3' E93 LCI 325d

a common cause of knocking

Well here it is

It is also used in certain applications to straighten or eliminate excessive drive shaft angle

E36/E46 M3 Diff Cover Washer Upgrade Kit - Suits 33171134872 G31 Touring If you speak in BMWThis upgrade kit is for all E36 and E46 M3 running our polyurethane 80A or 95A differential cover bushings! Polyurethane bushings are a great upgrade in performance while being compliant enough to be a good compromise on the street. Most race cars and pro level drift cars all run solid differential bushings, just ask our FD driver Rome Charpentier! However, solid bushings might be a little difficult to live with for those who street drive their cars.