The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking procurement for heat exchangers, specifically identified by NSN 7R-1660-016909781-P8 and reference number 182820-4, with a quantity of 2 each. These heat exchangers are critical components used in aircraft air conditioning, heating, and pressurizing systems, ensuring optimal operational performance in various military applications. Interested vendors should note that delivery will be on a FOB origin basis, and for further inquiries, they can contact Helen I. Carmelo at (215) 697-1138 or via email at HELEN.I.CARMELO.CIV@US.NAVY.MIL.