On this parts fiche the Bolt,flange,6x45 is the most specified component.
Check out any of the thirty-three Crankcase/oil Pump components enlisted.
Parts such as the Crankcase/oil Pump: Bolt,flange,6x28, Bolt,flange,sh 6x18, O-ring,18.3x2.3, Pipe Comp Inlet are included in the Sh50d Scoopy 1993 (p) Norway Kph Crankcase/oil Pump parts fiche.