Oshkosh Defense LLC, Oshkosh, Wisconsin, is awarded a $39,473,753 firm-fixed-price, indefinite-delivery/indefinite-quantity contract for multiple engineering change proposal (ECP) kits to support the Marine Corps medium and heavy tactical vehicles (MHTV). The contract provides for the procurement of Government approved multiple ECP kits, parts, and hardware components for the medium and heavy fleet of vehicles. MHTV’s fleet of vehicles include Medium Tactical Vehicle Replacement Family of Vehicles (FoV), Logistics Vehicle System Replacement FoV, and P19-Replacement vehicle including Automatic Fire Extinguisher System. These ECP kits, parts, and hardware components are required to support recurring installations that enhance the survivability and capability for the vehicles. Work will be performed in Wisconsin, with an expected completion date of July 2029. The maximum dollar value including all ordering years is $39,473,753. No funds will be obligated at time of award. Funds will be obligated on individual delivery orders as they are issued. Fiscal 2022, 2023, and 2024 procurement (Marine Corps) funds in the amount of $2,100,000 are being obligated at the delivery order level. Contract funds in the amount of $1,600,000 will expire at the end of the current fiscal year and $500,000 will not expire at the end of the current fiscal year. This contract was a sole source acquisition pursuant to Federal Acquisition Regulation 6.302-1(a)(2)(iii). Marine Corps Systems Command, Quantico, Virginia, is the contracting activity (M67854-24-D-0082).