In this schematic the "Bolt,flange12x150" is used most often.
The Cylinder Head Cover assembly is constructed from several parts from which the Cover,cyln Head is the most expensive.
Parts such as the Cylinder Head Cover: Bolt,spl.6x45,5, Gasket.head Cover (nas), Holder,rocker Arm, Rubber, Mount are included in the Cx500d Deluxe 1981 (b) Usa Cylinder Head Cover parts fiche.