The invention relates to a device for attaching a façade-mounted cooling means for motor vehicles, such as a radiator, mounted on a first part such as a crosspiece and comprising an oblong housing that receives a pin projecting from a second part, such as the radiator, the housing having a first position (2a) for receiving the pin corresponding to normal working conditions of the device, the first position (2a) being defined between one end of the housing and two projecting legs (4) made in the housing, said pin being movable in guided translation between the first position (2a) and at least one second position (2b) when subjected to a force that exceeds a predetermined threshold. According to the invention, said legs (4) each extend from an edge of the housing, obliquely, towards one another, with the ends (4a) thereof facing one another, thus defining, along with one end of the housing, the first position (2a), and said branches (4) may be moved apart from one another so as to lie substantially along the edges of the housing so as to allow the pin to move into the second position (2b) when the predetermined force threshold is exceeded.