Some items from this specific schematic: Gasket, Cylinder, Plug, Spark (bpr7hs), Head, Cylinder 1, Nut, Flange (17l).
With four applications this Bolt, Stud (5g6) is the most specified part.
This part-list fiche shows all the components that make up the Ch50 1990 3ec6 France 203ec-351fb Cylindre - Culasse .