The most reasonably priced component used on the Cm200t Twinstar 1980 (a) Usa Air Cleaner is the Bolt,hex 5x12.
The Air Cleaner assembly is constructed from several parts from which the Housing, Air Cleaner is the most expensive.
Some items from this specific schematic: Tube,4.5x6.5x350, Washer,screw 4x18, Cover, Clip,c6,tube.