In this schematic the "Washer" is used most often.
Parts such as the Front Brake Hose: Guide,brake Hose No.2, Washer, Boot,master Cylinder, Hose,front Brake are included in the Gn400t 1981 (x) Usa (e03) Front Brake Hose parts fiche.
The lowest price component in this Front Brake Hose parts-list fiche is the Washer.