Oshkosh Defense LLC, Oshkosh, Wisconsin, has been awarded a maximum $17,586,259 firm-fixed-price, indefinite-delivery/indefinite-quantity contract for diesel engines. This was a sole-source acquisition using justification 10 U.S. Code 3204 (c)(1), as stated in Federal Acquisition Regulation 6.302-1. This is a three-year contract with no option periods. The ordering period end date is Dec. 20, 2027. Using military service is Army. Type of appropriation is fiscal 2025 through 2030 Army working capital funds. The contracting activity is the Defense Logistics Agency Land and Maritime, Warren, Michigan (SPRDL1-25-D-0017).