The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking to procure transmission and mechanical replacement parts for repair and modification purposes. The procurement involves a quantity of four units of National Stock Number (NSN) 7R-3010-123915959-SX, with delivery terms set to FOB Origin, indicating that the contractor will bear the shipping costs until the goods are delivered. These parts are critical for maintaining operational readiness and functionality of naval equipment, emphasizing their importance in defense operations. Interested vendors should note that the government intends to negotiate with only one source under FAR 6.302-1, and proposals must be submitted within 45 days of this notice, with contact inquiries directed to Andrew N. Phillips at (215) 697-5047 or via email at ANDREW.N.PHILLIPS10.CIV@US.NAVY.MIL.