The component with the lowest price in the F-16 RADIATOR schematic is the Glip,tube 4.5mm.
Some items from this specific schematic: Hose A, Water, Band,self Lock, V.tube 5x8x400, Ty-lap 3.6x281.
The F-16 Radiator is made up of components including this Radiator Assy which is the most expensive.