The Rear Master Cylinder ('81 -'82 K assembly is constructed from several parts from which the Master Cylinder Assembly is the most expensive.
Parts such as the Rear Master Cylinder ('81 -'82 K: Diaphragm, Hose-brake,8x12x163, Bolt,oil,l=23, Pin-cotter,2.0x15 are included in the Kz750e1 1980 Usa Canada Rear Master Cylinder ('81 -'82 K parts fiche.
On this parts fiche the Washer,10.5x15x1.5 is the most specified component.