Heat exchanger

The invention relates to a heat exchanger (1), in particular an intercooler or a coolant radiator, comprising two floors (2), each of which has passages (3) for accommodating the longitudinal end regions of fluid-conducting tubes (4), at least one side part (6), one longitudinal end region (7) of which is at least partially accommodated in a passage (8) at the end of the associated floor (2) or adjoins the floor (2). A fundamental feature of the invention is that the side part (6) has at least two segments (9,10) with differing cross-sections. 本发明涉及种热交换器(1)，尤其中冷器或者冷却剂散热器，包括：两个地板(2)，每个地板(2)具有用于收纳流体传导管(4)的纵向端部区域的通道(3)，至少个侧面件(6)，至少个侧面件(6)的个纵向端部区域(7)至少局部收纳在关联地板(2)的端部的通道(8)中或者毗邻地板(2)。本发明的基本特征是，侧面件(6)具有不同截面的至少两个分段(9、10)。