The most expensive part in this assembly is the Gear,crank Bal Driven(nt:46).
Parts such as the Crank Balancer: Washer(12x40x2.5), Bearing(25x62x17), Key, Washer are included in the Tu250x 1998 (w) (e02 E04 E17 E24 E25 E34 E39) Crank Balancer parts fiche.
On this parts fiche the Spring is the most specified component.