The Screw,tapping,5x1 is the cheapest item from this partsfiche.
forty-seven components are shown in this Crf250x 2007 (7) Australia Air Cleaner exploded diagram.
A sample from the products for the Air Cleaner include: Collor,air/c, Nut,clip 6mm, Bolt,flange,sh,6x16, Bolt,elem.set.