Parts such as the Cylinder Head: Bolt,flange,6x32, Spark Plug(dpr6ea, Bolt.stud 2,8x25, Gasket Cylin,head (nas) are included in the Trx400fw Fourtrax 2000 (y) Australia Hor Cylinder Head parts fiche.
The Honda CYLINDER HEAD has twenty-five products enlisted in the schematic.
In this schematic the "Bolt,flange,6x40" is used most often.