Of all the components used in this assembly the Holder,camshaft is the most expensive.
Parts such as the Cylinder Head Cover: Nut,hex.,8mm, Rubber, Mount, Pin,dowel,10x28, Pkg,head Cover (nas) are included in the Cb250p 1996 (t) The Middle And Near East / Plr Cylinder Head Cover parts fiche.
In this schematic the "Washer,8mm" is used most often.