twenty-six components are shown in this Crf250r 2004 (4) Australia Air Cleaner (crf250r4,5) exploded diagram.
With six applications this Nut Thin 5mm is the most specified part.
A sample from the products for the Air Cleaner (crf250r4,5) include: Tube C,breather, Clip B12,tube, Tube,air/c Conn, Clip,tank Hose.