The component with the lowest price in the REAR MASTER CYLINDER schematic is the Pin Cotter,2.0.
The Rear Master Cylinder is made up of components including this Cylinder-assy-master,rr which is the most expensive.
Parts such as the Rear Master Cylinder: Connector, Reservoir, Clamp,hose, Bolt,6x14 are included in the Rm65 2004 (k4) Usa (e03) Rear Master Cylinder parts fiche.