This is a sources sought notice for spare parts for the PATRIOT Missile System, specifically engine flywheels, to locate companies interested in becoming approved manufacturers. The items are currently restricted to two approved sources: AM General LLC and General Motors LLC. The agency, DLA Land & Maritime, does not possess the technical data needed to procure these items and cannot evaluate alternate products. Interested parties may submit qualification information as outlined in procurement note L04 to the specified contact email to be considered for future procurements. Respondents will be notified when the formal solicitation is published.