The lowest price component in this Crankcase parts-list fiche is the Nut,flange,4mm.
With a quantity of nine pieces, the Bolt,flange 7x40 is the most used part in the CRANKCASE diagram.
A sample from the products for the Crankcase include: O-ring,13.8x2.5, Orifice,a #100, Plate B,brg, Bolt Flange 6x18.