Parts such as the Seat (vl800 E3): Washer(6.5x20x1.6), Nut, Seat Assy, Bolt(6x18) are included in the Vl800t Boulevard C50 2011 (l1) Usa Californi Canad (e03 E33 E28) Seat (vl800 E3) parts fiche.
The component with the lowest price in the SEAT (VL800 E3) schematic is the Washer(6.5x20x1.6).
The Seat (vl800 E3) assembly is constructed from several parts from which the Seat Assy is the most expensive.