On this parts fiche the Bolt is the most specified component.
The lowest price component in this Crankcase (model P/r/s) parts-list fiche is the Gasket 8.2x14x1 (nas).
Parts such as the Crankcase (model P/r/s): Bolt, Bolt, Gasket(14x19.2x2) (nas), Bolt are included in the Dr250se 1990 (l) Usa (e03) Crankcase (model P/r/s) parts fiche.