The Seat is made up of components including this Double Seat Assy which is the most expensive.
Some items from this specific schematic: Double Seat Assy, Double Seat Assy, Nut, Flange(34m), Damper, Seat.
This part-list fiche shows all the components that make up the Dt125r (15.0ps) 1988 3bp1 France 283bn-351f1 Seat .
