Heat exchanger inlet and outlet pipe connection structure

A heat exchanger, comprising:

• a first pipe connection structure including a first outer wall defining at least a portion of an interior of the first pipe connection structure, the interior of the first pipe connection structure receiving a first fluid therein;
• a first coupling element received in a first opening formed through the first outer wall of the first pipe connection structure, the first coupling element including a first through-hole formed therethrough;
• a second coupling element received in a second opening formed through the first outer wall of the first pipe connection structure;
• and
• a first manifold tank coupled to each of the first coupling element and the second coupling element, the first manifold tank including a first tank compartment extending longitudinally from the first coupling element and a second tank compartment extending longitudinally from the second coupling element, the first through-hole of the first coupling element providing fluid communication of the first fluid between the interior of the first pipe connection structure and the first tank compartment and the second coupling element forming a first fluid barrier wall for preventing fluid communication of the first fluid between the interior of the first pipe connection structure and the second tank compartment by way of the second coupling element.