The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking qualified sources for the procurement of 241 units of a critical aircraft valve component, identified by NSN 7R-4120-014733562-QE and reference number 814326-2. This procurement requires engineering source approval due to the flight-critical nature of the item, necessitating that only approved sources with unique design capabilities and manufacturing knowledge may participate. Interested parties must submit their proposals along with the required source approval documentation within 45 days of this presolicitation notice, with the understanding that the government may proceed with award based on fleet support needs if new source approvals cannot be processed in time. For further inquiries, interested vendors can contact Gina P. Sassane at (215) 697-2198 or via email at GINA.P.SASSANE.CIV@US.NAVY.MIL.