A sample from the products for the Headlamp (model T) include: Headlamp Assembly, Screw, Bulb(12v60/55w,h4), Cover,socket.
The Headlamp (model T) is made up of components including this Headlamp Assembly which is the most expensive.
The component with the lowest price in the HEADLAMP (MODEL T) schematic is the Screw.
