Parts such as the Front Brake Hose: Boot,master Cylinder, Bolt,union, Guide,brake Hose No.2, Hose,front Brake are included in the Gs650gl 1982 (z) Usa (e03) Front Brake Hose parts fiche.
The Washer is the cheapest item from this partsfiche.
With four applications this Washer is the most specified part.