A sample from the products for the Crankcase include: O-ring,11.9x2.2, Guide Comp,oil Pu, Bolt,flange,8x80, Bolt,flange 9x91.
The lowest price component in this Crankcase parts-list fiche is the Bolt,hex.,6x14.
On this parts fiche the Bolt,stud 10x165 is the most specified component.