Abstract: In an arrangement for the cooling of vehicle components comprising a first coolant circuit including a first component to be cooled, a radiator with cooling fan and a coolant pump for circulating coolant through the first component and the radiator, a by-pass line arranged in parallel flow relationship with the radiator and including a second heat exchanger with a fan for providing heated air for the passenger compartment of the vehicle and a control valve for controlling the flow of coolant through the by-pass line and the second heat exchanger, there is provided a second coolant circuit which extends also through the second heat exchanger separately from the first coolant circuit and includes an additional component to be cooled.