A mounting bracket is shown for a heat exchanger core having spaced-apart tubes having peripheral flanges surrounding a manifold. The mounting bracket has a first clip grooved to receive a front edge portion of a selected flange, and a pair of second clips, each grooved to receive, respectively, the back edge portion of an other flange disposed above the selected flange, and a further flange disposed below the selected flange. The clips are joined together by a panel portion adapted for the mounting of the heat exchanger. The clips are tapered to distribute bending stresses therealong.