The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking proposals for the repair and modification of a manifold assembly, identified by NSN 7R-1650-015883704-RQ. The procurement involves a quantity of two units, with delivery terms set to FOB Origin, and is critical due to the unstable design of the part, which has shown marginal performance and requires significant changes that may render the current configuration obsolete. This item is flight critical, necessitating government source approval prior to contract award, and only previously approved sources will be considered for this solicitation. Interested parties must submit their proposals, including necessary documentation for source approval, by the deadline of 45 days from the notice publication, with inquiries directed to Alainna M. Pettit at (215) 697-2606 or via email at ALAINNA.M.PETTIT.CIV@US.NAVY.MIL.