Exhaust gas recirculation heat exchanger assembly

An exhaust gas recirculation heat exchanger assembly comprising:

• a tube having first and second walls extending between a first lateral end and a second lateral end;
• a fin structure received in the tube to form a cooling tube assembly, the cooling tube assembly defining a first channel, a second channel, and a plurality of intermediate channels that extend between the first and second channels, the first channel being disposed between the first lateral end of the tube and a first fin of the fin structure, the second channel being disposed between the second lateral end of the tube and a second fin of the fin structure disposed opposite the first fin;
• and
• a clip coupled to the cooling tube assembly, the clip having at least one flow impeding portion arranged to inhibit a fluid flow through at least one of the first channel, the second channel, or the plurality of intermediate channels,
• wherein the clip includes a first member which extends into the first channel and a second member that extends into the second channel,
• wherein the flow impeding portions comprise a first projection that extends outwardly from the first member towards the first lateral end, the first projection being resiliently coupled to the first member.