The F-15 Seat assembly is constructed from several parts from which the Seat Assy.,double is the most expensive.
Parts such as the F-15 Seat: Stay,grab Rail, Bolt Flange 6x14, Cowl,rr*nh-121p-a, Nut,flange,6mm are included in the Vt500e 1985 (f) F-15 Seat parts fiche.
The most reasonably priced component used on the Vt500e 1985 (f) F-15 Seat is the Screw-wash,4x12.