Parts such as the Flasher Light: Washer 341833480000, Collar, Flasher Front (371), Ybs67-8 Washer, Spring, Bulb, Flasher (12v-32cp) (256-83311-70) are included in the Xs850s 1981 (b) Usa Flasher Light parts fiche.
The lowest price component in this Flasher Light parts-list fiche is the Screw, Lens Fitting.
This Flasher Light diagram displays the required parts for the Xs850s 1981 (b) Usa Flasher Light.