The Department of Defense, through the Defense Logistics Agency (DLA Aviation), is seeking quotes for the procurement of three heat exchangers, specifically identified by NSN 1660016465966. This solicitation is a Total Small Business Set-Aside and requires that the items meet the specifications outlined in the source-controlled drawing, with an approved source listed as 12536 63862-000. The heat exchangers are critical components used in aerospace applications, emphasizing the importance of compliance with military specifications. Interested vendors must submit their quotes electronically, and any inquiries should be directed to the buyer via email at DibbsBSM@dla.mil, with delivery expected within 510 days after order placement.