Abstract: A heat exchanger, especially an oil cooler for internal combustion engines. The heat exchanger consists of a plurality of mutally parallel tubes to convey the heat exchanging medium and blade-like heat exchange elements arranged perpendicularly to the tubes. The heat exchange elements are firmly secured to the tubes and also bent at the outer edges and are super imposed in the manner of scales. The medium to be cooled is fed via pipes arranged perpendicularly to the heat exchanging elements. The pipes open into a distributor plate having a liquid inlet and a liquid outlet. The inlet and/or outlet for the coolant is also fitted in the diameter of the distributor plate.