The sixteen Gz250 Marauder 2007 (k7) Usa (e03) Front Master Cylinder component parts are all listed in this schematic.
In this schematic the "Washer(10x15x1.5)" is used most often.
A sample from the products for the Front Master Cylinder include: Holder, Clamp,brake Hose, Bolt, Hose, Front Brake.