WARNING: This page is about a different car, the 2009 Mercedes-Benz CLK350 and 2008 Mercedes-Benz CLK350. However, it is still accessible from the selected car via links, so may be relevant.
FG 03/01/05/27Set B
ENGINE all
Further use
FG 07/Set A
WS07.00-P-0006A
Use:
Bihexagonal socket, 27 mm, 1/2" square drive for loosening and tightening the center bolt on the crankshaft.