On this parts fiche the Washer is the most specified component.
The Washer is the lowest priced item on this Front Brake Hose (gs1000c schematic.
Parts such as the Front Brake Hose (gs1000c: Guide,brake Hose, Hose,front Brake, Washer, Union are included in the Gs1000n 1979 (n) Usa (e03) Front Brake Hose (gs1000c parts fiche.