Parts such as the Generator: Rotor Assy, Stator Assy, Bolt, Hexagon Socket Head, Bolt, Hexagon Socket Head(4gl) are included in the Ttr125le 2004 5hpw Holland 1c5hp-100eb Generator parts fiche.
The Generator is made up of components including this Rotor Assy which is the most expensive.
The component with the lowest price in the GENERATOR schematic is the Bolt, Hexagon Socket Head.