Parts such as the Air Cleaner: Bolt,6x12, Duct, Tube,breather, Plug are included in the Er650b6f Er6n Abs 2006 Europe,middle East,africa,uk Air Cleaner parts fiche.
The Screw,tapping,5x16 is the cheapest item from this partsfiche.
Of all the components used in this assembly the Filter-assy-air is the most expensive.