The sub assemblies and components that make up this Crankcase include this Crankcase Set, the most expensive part.
In this schematic the "Bolt" is used most often.
Parts such as the Crankcase: Bolt(8x50), Bolt(8x100), Bolt, O Ring(d:1.9,id:9.8) are included in the Gn250e 1999 (x) General (e01) Crankcase parts fiche.