twenty components are shown in this Zx550a3 Gpz550 1986 Europe Uk Fr Fg Gr Crankcase exploded diagram.
Parts such as the Crankcase: Bearing-needle,37btm4, O Ring,8mm, Screw-pan Head,6x20, Plug,main Gallary,18x are included in the Zx550a3 Gpz550 1986 Europe Uk Fr Fg Gr Crankcase parts fiche.
On this parts fiche the Stud,8x146 is the most specified component.