Parts such as the Crankshaft: Crankshaft Assembly, Screw, Washer(31x48.5x1), Crankshaft,r are included in the Gn250 1994 (r) (e02 E04 E22 E24 E25 E34 E39 E53) Crankshaft parts fiche.
With two applications this Washer(31x48.5x1) is the most specified part.
The component with the lowest price in the CRANKSHAFT schematic is the Screw.