Parts such as the Air Cleaner: Bolt,flange,6x40, Bolt,fr Cush.und., Screw,cross 4x25, Collar,air/c Set are included in the Sh50 Scoopy 1998 (w) Belgium Kph Air Cleaner parts fiche.
The Screw,cross 4x25 is the cheapest item from this partsfiche.
The Air Cleaner assembly is constructed from several parts from which the Case Sub Assy,air is the most expensive.