The U.S. Coast Guard is seeking quotations for the repair of ECU Control Units, with a firm-fixed price purchase order anticipated on a sole source basis to the manufacturer, SIMTECH, INC. The solicitation is extended until June 2, 2026, and the anticipated award date is on or about that same date. The requirement is for a base quantity of three units, with an option to increase by up to two additional units within 365 days after award. No drawings, specifications, or schematics are available from the agency. The location for performance of services is not specified.