i took a look at the EPC and found what the driveshaft bushing thing is:




I also found a repair kit for the bushing in the EPC with part # 124 410 0010, comes with bushing, the boot, and like 2 protective caps for the bushing. the funny thing is, i've never seen the boot nor the protective caps on any driveshafts for a 190E. are they crucial?