The thirty Ss800 2004 Eu (supersport 800) 9151-1652b 036 Seat component parts are all listed in this schematic.
A sample from the products for the 036 Seat include: Cover Frame, Rh Unpainted, Owners Manual Japanese, Cover Frame Lh Red, Washer, Nylon 11x5.2x0.5.
The most reasonably priced component used on the Ss800 2004 Eu (supersport 800) 9151-1652b 036 Seat is the Washer 16x6.4x1.5.