The Crankcase is made up of components including this Crankcase Set which is the most expensive.
Some items from this specific schematic: Bolt(6x125), Spacer,eng Mtg(l:16.8), Pin(8.4x11x20), Jet.
This schematic depicts all components used in the Gs500f 2005 (k5) Usa (e03) Crankcase partslist.