The most reasonably priced component used on the Dr250se 1992 (n) Usa (e03) Crankcase (model P/r/s) is the Gasket 8.2x14x1 (nas).
The Crankcase (model P/r/s) assembly is constructed from several parts from which the Crankcase Set is the most expensive.
On this parts fiche the Bolt is the most specified component.