The component with the lowest price in the OIL COOLER schematic is the Bolt,socket.
A sample from the products for the Oil Cooler include: Hose, Oil 2, Bolt, Union(2gh), Plunger, Gasket(2gh) (nas).
With a quantity of four pieces, the Gasket(2gh) (nas) is the most used part in the OIL COOLER diagram.