The Department of Defense, through the Defense Logistics Agency (DLA Aviation), is seeking quotes for the procurement of two units of the NSN 1660013177913 Heat Exchanger, Air, as part of a Combined Synopsis/Solicitation. This procurement is a source-controlled drawing item, and the approved source for this item is identified as 70210 2340268-3-2, emphasizing the importance of compliance with the specified military standards and drawings. The items are critical components used in aerospace applications, and the delivery is required at DLA Distribution San Diego within 92 days after order placement. Interested vendors must submit their quotes electronically, and any inquiries should be directed to the buyer via email at DibbsBSM@dla.mil, as hard copies of the solicitation are not available.