The most expensive part in this assembly is the Cover.r.crankcase.
On this parts fiche the Screw Cross 6x80 is the most specified component.
Parts such as the E-4 Right Crankcase Cover: Pin,cotter 2.0x15, Screw,oval,5x25, Washer,plain, 6mm, O Ring, 6m/m are included in the Cy80 1979 (z) France E-4 Right Crankcase Cover parts fiche.