Parts such as the Lower Crankcase: Bolt,flange, 6x32, Washer,plug Drain 14, Bolt,flange,6x40, Bolt,hex 8x135 are included in the Cb400n Superdream 1981 (b) England Lower Crankcase parts fiche.
The Washer,plug Drain 14 is the cheapest item from this partsfiche.
twenty components are listed in the schematic for this Cb400n Superdream 1981 (b) England Lower Crankcase .