Parts such as the Cylinder Head: Bolt(6x39), O-ring (d:2.4 Id:29.7), Plug,spark(dr8es), Gasket(14x19.2x2) (nas) are included in the Gsx250es 1983 (d) General Export (e01) Cylinder Head parts fiche.
The Cylinder Head is made up of components including this Head Assembly,cylinder which is the most expensive.