The Washer,6mm is the cheapest item from this partsfiche.
The Cylinder Head Cover - Cam Case assembly is constructed from several parts from which the Case,cam is the most expensive.
Parts such as the Cylinder Head Cover - Cam Case: Gasket B,cyl.head (nas), Bolt,hex 6x8, Gasket,cam.case (mca), Case,cam are included in the Cl250 K2 General Export Cylinder Head Cover - Cam Case parts fiche.