Parts such as the Headlight: Socket, Washer, Spring, Nut Hexagon (738), Rim, Head Lamp are included in the Rd80 1982 12g Europe 2212g-300e1 Headlight parts fiche.
Of all the components used in this assembly the Headlight Unit Assy is the most expensive.
In this schematic the "Spring, Reflector Set" is used most often.