Parts such as the Radiator: Hose B,water, Hose C,water, Radiator Comp, Hose A,water are included in the Nes125 2000 (y) European Direct Sales Kph Radiator parts fiche.
The component with the lowest price in the RADIATOR schematic is the Cap,reserve Tank.
This Radiator Comp is the most expensive of the items that make up this Radiator assembly.