This is a sources-sought notice for a Transfer Transmission (NSN 2520-01-571-5785) used in the Armored High Mobility Multi-Purpose Wheeled Vehicle (HMMWV), with quantities ranging from 69 EA to up to 1,725 EA. The Technical Data Package is source-controlled to the contractor. This is not an open solicitation, and qualification testing and evaluation are required to become an approved source. Source approval does not guarantee business but provides the opportunity to compete on future solicitations. The point of contact is the Source Approval Officer at usarmy.detroit.tacom.mbx.mso-ombudsman@army.mil, with additional Source Approval Program and SAR package information available online.