This is a Sources Sought Notice for market research, not a solicitation or request for offers. The Defense Logistics Agency (DLA) Weapons Support is seeking companies capable of manufacturing or legitimately obtaining an air filter element (NSN 1660-01-621-4132), currently made by Hydraulics International Inc. Responses are voluntary and must be submitted by June 3, 2026, at 2:00 PM Eastern Time. The performance location is not specified, and no budget amounts are provided. Interested parties must submit a Source Approval Request (SAR) package to demonstrate their ability to manufacture the item to required quality standards.