The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking to procure two units of the fuel quantity probe, NSN 7R-1680-016586528-P8, under a presolicitation notice. 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 the part is not sufficiently available for full and open competition. Interested vendors must provide detailed documentation regarding their qualifications and experience in producing similar items, as well as comply with the source approval procedures outlined by the Government. For further inquiries, Amanda M. Sweeney can be contacted at (215) 697-2198 or via email at AMANDA.SWEENEY@NAVY.MIL, with proposals due within 45 days of the notice publication.