The component with the lowest price in the CRANKCASE schematic is the Bolt, Flange.
Parts such as the Crankcase: Bolt, Hexagon Socket Head, Plug, Bolt, Flange, Pin, Dowel(3vd) are included in the Xp500 2007 15b1 South Africa 1f15b-300e1 Crankcase parts fiche.
The twelve Xp500 2007 15b1 South Africa 1f15b-300e1 Crankcase component parts are all listed in this schematic.