The U.S. Army has awarded Mack Defense LLC a significant contract valued at $221.8 million to supply M917A3 Heavy Dump Trucks (HDTs), alongside associated logistics support and engineering services. This substantial investment underscores the Army’s ongoing commitment to enhancing its combat support and infrastructure capabilities.
The M917A3 is a militarized variant of the robust Mack Granite series commercial truck, custom-engineered to meet the rigorous demands of military operations. Designed for tactical missions, these heavy-duty trucks are built to handle the transport of large volumes of bulk materials, such as gravel, sand, or rubble, across diverse terrains and in challenging environments, both domestically and in forward-deployed zones. Mack Defense emphasizes that the M917A3 seamlessly combines commercial reliability with military-grade performance.
The contract includes provisions for logistics products and support for engineering change proposals, indicating a long-term commitment to continuous vehicle improvement and the integration of updated components throughout the agreement’s duration. While the exact number of trucks to be delivered was not disclosed in the award notice, the contract’s substantial value and an estimated completion date of December 23, 2031, signify a multi-year effort to sustain and expand the M917A3 fleet across Army units.
The acquisition is overseen by the Army Contracting Command at Detroit Arsenal, Michigan. Mack Defense, a subsidiary of Mack Trucks headquartered in Allentown, Pennsylvania, has a proven track record, having previously delivered M917A3 trucks to the Army under earlier contracts. The company remains a primary supplier for the Army’s tactical logistics vehicle programs.
This strategic procurement ensures that U.S. Army mobility and infrastructure operations, including the construction and maintenance of airfields, roads, firing ranges, and other critical facilities, will be well-supported. By investing in these durable and high-performing heavy dump trucks, the Army is solidifying its logistical backbone, crucial for maintaining operational readiness and responding effectively across the full spectrum of military and humanitarian missions.