220 589 01 09 00 Socket wrench bit - WS28.00-P-0093B
WARNING: This page is about a different car, the 2009 Mercedes-Benz E350 and 2008 Mercedes-Benz E350. However, it is still accessible from the selected car via links, so may be relevant.
FG 28/Set B
Use:
Socket wrench bit (size 36) for loosening and tightening collar nut on output and drive flange.