There is disclosed an attachment (12) suitable for attaching a first component of an article to a second component of the article. The attachment preferably includes a flange portion (20) extending from the first component and one, but preferably, a pair of flange members (22) extending from the second component. The flange portion (12) and the flange members (22) typically interferingly engage one another for attaching the first component to the second component. It has been found that the attachment provided in the present invention is particularly effective for attaching a heat exchanger (14) to another component such as a shroud or another heat exchanger (16) together for forming a heat exchanger assembly (10).