The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking to procure four units of a specialized part identified by NSN 7R-1680-016497144-P8, REF NR 1153394-3-1. This procurement requires engineering source approval to ensure the quality of the part, necessitating that the acquisition or repair be conducted by approved sources with unique design capabilities and manufacturing knowledge. The contract action will be negotiated with only one source under FAR 6.302-1, and interested parties are encouraged to express their capabilities within 45 days of this presolicitation notice. For further inquiries, interested vendors can contact Joshua J. Seltzer at (215) 697-2849 or via email at joshua.j.seltzer@navy.mil.