The most reasonably priced component used on the Er500a3 Er5 1999 United Kingdom Fr Nl Ar Gr It Nr Sd Sp St Crankcase is the Pin,dowel,6.2x8x14.
The forty-three Er500a3 Er5 1999 United Kingdom Fr Nl Ar Gr It Nr Sd Sp St Crankcase component parts are all listed in this schematic.
In this schematic the "Gasket,oil Pipe,8.2x1 (nas)" is used most often.