The Crankcase is made up of components including this Crank Case Comp.r which is the most expensive.
With eight applications this Bolt,flange,8x80 is the most specified part.
Parts such as the Crankcase: Bearing C,main, Bolt,stud,10x197, Collar 23x20, O-ring,7.8x2.2 are included in the Xl600v Transalp 1989 (k) Germany / 27p Crankcase parts fiche.