Parts such as the E-1 Cylinder Head Cover: Rubber,mounting, Bolt,special 6mm, Cover,head, Gasket,head Cover (nas) are included in the Vf400f 1983 (d) E-1 Cylinder Head Cover parts fiche.
Of all the components used in this assembly the Cover,head is the most expensive.
On this parts fiche the Bolt,special 6mm is the most specified component.