The Department of Defense, through the Defense Logistics Agency (DLA Aviation), is seeking quotes for the procurement of two units of the NSN 1660-01-317-7913, specifically a heat exchanger for air applications. This procurement is based on a source-controlled drawing, and the approved source for this item is identified as 70210 2340268-3-2, indicating the necessity for compliance with specific military specifications and standards. The items are critical components used in aerospace applications, underscoring their importance in maintaining operational readiness. Interested vendors must submit their quotes electronically, as hard copies of the solicitation will not be available, and inquiries can be directed to the buyer via email at DibbsBSM@dla.mil. The delivery is expected at DLA Distribution San Diego within 81 days after order placement.