DLA Aviation is conducting market research via a sources sought notice for the manufacture/supply of NSN 1650-00-484-6918, FILTER ELEMENT, FLUID, under NAICS 336413; no solicitation is posted at this time. Interested organizations are asked to provide company information and tailored capability statements covering manufacturing, inspection/testing, preservation/packaging, shipping, and potentially supply chain/logistics, forecasting, long-lead procurement, and material shortage management. The requirement is estimated as a five-year base-period long-term contract, with unit prices established at award, and the item must meet QPL requirements per MIL-PRF-83860D; approved sources are PTI Technologies and Pall Aeropower. Other interested contractors would need to submit a Source Approval Request package for approval, and DLA Aviation does not possess complete technical data on the part. Based on responses, the requirement may be set aside for small businesses or competed full and open, and multiple awards may be made.