Parts such as the Front Caliper (model T): Insulator,axle, Bolt, Bleeder, Caliper Assembly,front,right are included in the Gs500e 1990 (l) Usa (e03) Front Caliper (model T) parts fiche.
thirteen components are shown in this Gs500e 1990 (l) Usa (e03) Front Caliper (model T) exploded diagram.
The Bolt is the cheapest item from this partsfiche.