The Department of Defense, through the NAVSUP Weapon Systems Support office, is seeking proposals for the procurement of two radiators, identified by NSN 7R-1615-012903175-HT, from approved sources including ALLCLEAR AEROSPACE & DEFENSE INC and SIKORSKY AIRCRAFT CORP. This procurement is critical for maintaining helicopter rotor blades and associated drive mechanisms, underscoring the importance of these components in defense operations. Interested vendors must submit a Source Approval Request if they are not already approved to manufacture this item, as the procurement will not be delayed for SAR approvals. Proposals are due within 45 days of this notice, with the anticipated award date set for April 2024; interested parties can contact Lauren N. Phillips at lauren.n.phillips@navy.mil for further information.