The lowest price component in this Seat - Carrier parts-list fiche is the Washer(6a1).
The Seat - Carrier assembly is constructed from several parts from which the Single Seat Assembly is the most expensive.
Parts such as the Seat - Carrier: Cover, Single Seat, Bolt(2lt), Spring, Torsion 2142475800, Bolt (661) are included in the At3 1972 1973 Usa Seat - Carrier parts fiche.