The Department of Defense, through the Defense Logistics Agency (DLA) Aviation at Philadelphia, PA, is soliciting offers for the procurement of air heat exchangers. The contract requires the provision of newly manufactured spares, as refurbished or remanufactured items will not be accepted, and all offers must come from government-approved sources of supply. These heat exchangers are critical components used in aircraft air conditioning, heating, and pressurizing systems, underscoring their importance in maintaining operational readiness and safety. Interested vendors should direct inquiries to Michael Offenbacker at 215-737-0466 or via email at MICHAEL.OFFENBACKER@DLA.MIL, with proposals due as specified in the solicitation.