Parts such as the Oil Tank: Cap,oil Tank, Switch Assy, Oil Level, Gasket (nas), Washer are included in the Zr50sk 1984 (e) (e02 E16 E21) Oil Tank parts fiche.
The component with the lowest price in the OIL TANK schematic is the Bolt.
The Bolt is the most widely applied product in the ZR50SK 1984 (E) (E02 E16 E21) OIL TANK ( three times ).