Heat exchanger for cooling a flow of charge air, and method of assembling the same

A heat exchanger for cooling a flow of charge air, comprising:

• a heat exchanger core having alternating coolant plates and air fins arranged in a core stacking direction and a top plate at one end of the heat exchanger core in the core stacking direction;
• a housing comprising an air inlet, an air outlet, an aperture through which the coolant plates and air fins are received into the housing, a bearing surface, and a peripheral wall located peripheral to the bearing surface, the peripheral wall including a first slot on a first side of the housing and a second slot on a second side of the housing, the second side being opposite of the first side of the housing;
• a gasket compressed between a first face of the top plate and the housing to provide an air seal at the aperture;
• and
• a retaining member disposed against a second face of the top plate, the retaining member comprising a first end portion and a second end portion opposite the first end portion;
• wherein the top plate is disposed on top of the bearing surface;
• wherein the top plate is at least partially located within the housing and extends from the first side of the housing to the second side of the housing;
• wherein the first end portion engages the first slot and the second end portion engages the second slot;
• and
• wherein the retaining member is elastically deformed to secure the retaining member to the housing.