The component with the lowest price in the REPAIR KIT 1 schematic is the O-ring(6r7).
The twenty-nine Gp1200a-a Gp1200ac-a 2002 Usa Repair Kit 1 component parts are all listed in this schematic.
Parts such as the Repair Kit 1: Gasket, Pump Case (nas), Gasket, Exhaust Pipe (nas), O-ring, Oil Seal(62t) are included in the Gp1200a-a Gp1200ac-a 2002 Usa Repair Kit 1 parts fiche.