126 589 02 09 00 Socket wrench bit - WS27.00-P-0022B
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 26/27/28/35/Set B
TRANSMISSION 722.3/4/5/6/9
Use:
30 mm socket, twelve point, 3/4" square for collar nut on output shaft.