Parts such as the Gasket Kit B: Gasket,starter Co (nas), O-ring,24.4x3.1, Gasket Kit B (nas), O-ring,24.4x3.1 are included in the Xr650l 1994 (r) Usa Gasket Kit B parts fiche.
The component with the lowest price in the GASKET KIT B schematic is the Washer,plug,drain 12.
Of all the components used in this assembly the Gasket Kit B (nas) is the most expensive.