The Department of Defense, through the Department of the Navy's NAVSUP Weapon Systems Support, is seeking proposals for the procurement of 54 units of a flight-critical filter set, identified by NSN 1R-4920-998448673-SX and reference number AS405-67-1892M0. This opportunity requires that all potential suppliers obtain Government source approval prior to contract award, as the item is essential for aircraft maintenance and repair, and only previously approved sources will be considered for this solicitation. Interested parties must submit the necessary documentation for source approval along with their proposals, as offers lacking this information will not be evaluated. For further inquiries, interested vendors can contact Chris Campellone at (215) 697-2530 or via email at CHRISTOPHER.CAMPELLO@NAVY.MIL.