A sample from the products for the Taillight include: Bulb,taillight, Washer,plain,6mm, Rub,hd/lt Brkt, Nut,flange,6mm.
The Nut,flange,6mm is the lowest priced item on this Taillight schematic.
On this parts fiche the Rub,hd/lt Brkt is the most specified component.