Abstract: A heat exchanger may include a tubular housing, a flange ring, two bases, and heat exchanger tubes that run through the housing and are each held in the bases at a longitudinal end side. A first flow channel may be formed in the heat exchanger tubes, and a second flow channel may be formed between the heat exchanger tubes and the housing. The housing may be formed from two one-piece and pot-shaped housing parts. Each housing part may have a housing section, a flange ring section, and a base. The two housing parts may be connectable to one another via the two flange ring sections.

Abstract: A heat exchanger may include a tubular housing, a flange ring, two bases, and heat exchanger tubes that run through the housing and are each held in the bases at a longitudinal end side. A first flow channel may be formed in the heat exchanger tubes, and a second flow channel may be formed between the heat exchanger tubes and the housing. The housing may be formed from two one-piece and pot-shaped housing parts. Each housing part may have a housing section, a flange ring section, and a base. The two housing parts may be connectable to one another via the two flange ring sections.

Abstract: A heat exchanger for a motor vehicle, with a housing with a first housing side and with a second housing side opposite to the first housing side, and with an inner housing wall and with an outer housing wall. The tubes, through which a gas can flow, are disposed in the housing. The tubes each of which has a first tube end and a second tube end, opposite to the first tube end, and with a first tube sheet disposed in the area of the first housing side. A first tube sheet has a number of first through-openings, through which the first tube ends extend, and a second tube sheet disposed in the area of the second housing side that has a number of second through-openings through which the second tube ends extend. The first tube sheet forms a first plane and the second tube sheet forms a second plane.