The component with the lowest price in the RIGHT CRANKCASE COVER schematic is the O Ring 8.4x2.4.
A sample from the products for the Right Crankcase Cover include: Dowel,pin,8x14, Element,oil Filte, Spg,oil Filter, Gasket,r.crankcas (nas).
This schematic depicts all components used in the Nx250 1989 (k) Usa California Right Crankcase Cover partslist.