The Air Force’s 421st Supply Chain Management Squadron at Tinker Air Force Base is conducting market research—not a solicitation—to identify potential manufacturing sources for a Valve Assembly used on the F-118 engine. No contract will be awarded from this sources-sought effort, and no funds are available for the requested information. The effort requires manufacturing, testing, preservation/packaging, supply-chain/logistics support, and prior manufacture of the subject or similar item within the past 36 months for the OEM or DoD. Qualification requirements apply, including a Source Approval Request package to the Oklahoma City Small Business Office, and the NAICS code is 336412 with a 1,000-employee size standard. Interested businesses should provide company and business-size information, teaming arrangements, similar government/commercial experience, and capability documentation to the 421 SCMS workflow.