The most reasonably priced component used on the Xs850 1981 (b) Usa Crankcase Cover is the Bolt (2h7).
Check out any of the twenty-three Crankcase Cover components enlisted.
Parts such as the Crankcase Cover: Oil Seal (25x40x6.0-1j7), Bolt (2h7), P1n, Dowel, Seal, Air Duct are included in the Xs850 1981 (b) Usa Crankcase Cover parts fiche.