On this parts fiche the Screw, Truss Tap. is the most specified component.
Parts such as the Intake: Cap, Cleaner Case 1, Bolt,flange (4my), Joint, Air Cleaner 1, Clip are included in the Xg250 2005 4d61 Italy 1d4d6-352s1 Intake parts fiche.
The component with the lowest price in the INTAKE schematic is the Bolt,socket.