Parts such as the Seat: Ybs67-8 Washer, Spring, Pad, Seat, Nut, Hexagon (663), Cover, Double Seat are included in the Yb100 1987 18n England 2718n-310e1 Seat parts fiche.
This Double Seat Assy is the most expensive of the items that make up this Seat assembly.
The most reasonably priced component used on the Yb100 1987 18n England 2718n-310e1 Seat is the Washer(526).
