The component with the lowest price in the OIL COOLER (OPTIONAL) schematic is the Gasket(16x22x2) (nas).
This Cooler Set,oil is the most expensive of the items that make up this Oil Cooler (optional) assembly.
Parts such as the Oil Cooler (optional): Washer,lock, Spacer (6.8x10x10), Hose,oil Cooler Upr, Guard,oil Cooler are included in the Dr250 1990 (l) Usa (e03) Oil Cooler (optional) parts fiche.