The seventeen Crf250r 2009 (9) European Direct Sales / Cmf R. Crankcase Cover component parts are all listed in this schematic.
A sample from the products for the R. Crankcase Cover include: Oil Seal16.5x25x5, Cap,oil Filler, Gasket,clutch Cov (nas), Cover,clutch.
In this schematic the "Bolt,flange,6x28" is used most often.