The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking qualified sources for the procurement of 20 units of the heat exchanger, air (NSN 7R-1660-015126501-QE, REF NR 1001441-1). This procurement requires engineering source approval due to the flight-critical nature of the item, necessitating that only approved sources may submit proposals, as the technical data for alternate sources is not readily available. Interested parties must submit their qualifications and capability statements to the contract specialist, Arianna G. Pilla, via email at ariana.pilla@navy.mil, with the solicitation expected to be issued on January 6, 2025, and responses due by February 6, 2025. This opportunity is not set aside for small businesses, and electronic submission is required.