This combined RFI/synopsis seeks market research on capable sources and commercial/non-developmental availability for a brake valve assembly (NSN 1630-01-087-0430; P/Ns 6002051-2 / 16VL014004-3), estimated quantity 8 EA, destined for DTW004 (FMS). It is not an RFP or invitation for bid and does not commit the Government to contract or pay for information. The requirement is not expected to be set aside for small businesses, and the Government does not plan to use FAR Part 12 commercial-item policies. Award requires engineering source approval/qualification by the design control activity, with approved sources retaining essential data rights/knowledge; alternate sources must qualify under Government procedures. Estimated delivery is 14 months after order receipt, and one or more items are subject to Free Trade Agreements.