This is a sources sought/market research notice for the spares procurement of an oil pump assembly (part number 4083997, NSN 2995014254066NZ) for the F100 engine, with an estimated requirement of 20 units. Performance would be at Tinker AFB, Oklahoma. Interested sources must be capable of new manufacture, including component procurement, inspection, testing, packaging, and shipping, and may need to cover nonrecurring engineering costs to become an approved source. There is no solicitation available at this time, and no contract will be awarded from this notice; interested parties must register via the “Add Me to Interested Vendors” button to participate in market research. The government is interested in all business types, including small, 8(a), service-disabled veteran-owned, HUBZone, and women-owned small businesses.