The most expensive part in this assembly is the Hose,front Brake.
Parts such as the Front Brake Hose (gs750b: Guide,brake Hose, Boot,master Cylinder, Hose,front Brake, Washer are included in the Gs750n 1979 (n) Usa (e03) Front Brake Hose (gs750b parts fiche.
With four applications this Washer is the most specified part.