This opportunity is for a firm-fixed price purchase order to acquire two Bladder Assembly items (NSN 4730-01-HS2-9206) from the original equipment manufacturer, Robertson Fuel Systems LLC, with a requested delivery date of October 21, 2026. An additional quantity of two may be ordered unilaterally within 365 days after award, for a maximum total of four items. Only brand-new parts with clear traceability to the OEM and a Certificate of Conformance will be considered. The solicitation is unrestricted, with no small business set-aside, and all responsible sources may quote. No budget amount or performance location is specified.