Parts such as the Seat: Bracket, Seat Lever, Spring, Torsion(3fa), Nut, Flange(4mv), Stopper, Main Stand are included in the Yfa1p/pc 2002 Usa Except California California Seat parts fiche.
The Nut, Flange(4mv) is the lowest priced item on this Seat schematic.
The Yfa1p/pc 2002 Usa Except California California Seat consists of nine pieces with the Single Seat Assy being the most expensive.