Parts such as the Front Master Cylinder: Hose Brake 1, Bracket, Master Cylinder, Front Stop Switch Assy, Lever, 2 are included in the Cw50n 2005 2b73 Slovenia 1d2b7-300f2 Front Master Cylinder parts fiche.
In this schematic the "Washer, Plain" is used most often.
The Washer, Plain is the cheapest item from this partsfiche.