This Master Cylinder Sub Assy 2 is the most expensive of the items that make up this 24 Front Master Cylinder assembly.
The most reasonably priced component used on the Hw151 2012 52s1 Europe Xenter 1l52s-300e1 24 Front Master Cylinder is the Bolt, Flange.
On this parts fiche the Washer, Plate(481) is the most specified component.