This latest order, combined with the 91 trucks ordered last month from the U.S. Army funded with the $47 million secured in the 2026 National Defense Appropriations Act, brings the total to 208 trucks with a combined value of more than $84 million. These recent orders are part of the new five-year contract awarded in June 2025 to Mack Defense for up to 450 trucks, with a total contract value of up to $221.8 million.
Based on the commercially available Mack® Granite® model, the M917A3 HDTs are manufactured at Mack Defense’s dedicated production line at the Mack Experience Center (MEC) in Allentown, Pennsylvania.
“We are deeply appreciative of the U.S. Army and Army National Guard’s continued trust in Mack Defense and the M917A3 Heavy Dump Truck program,” said Derik Beck, senior director of sales and marketing for Mack Defense. “This latest order reinforces the critical value and importance of our long-standing partnership with the U.S. Army. These rugged, mission-ready Granite-based HDTs directly support the warfighter by enabling essential construction, infrastructure maintenance and disaster relief operations worldwide. We are truly thankful for this vote of confidence and remain fully committed to delivering the highest-performing heavy dump trucks that our soldiers and guardsmen rely upon.”
The order enables continued production of the vitally important M917A3 HDTs that support the U.S. military’s construction and infrastructure maintenance capabilities. The HDTs are essential to building and maintaining airfields, roadways, landing strips, supply facilities and motor pools, and they provide critical support during disaster‑relief efforts in areas impacted by severe weather.
Spec’d with heavier-duty rear axles, all-wheel drive, increased suspension ride height and other ruggedized features to meet the unique requirements of the U.S. military, the M917A3 HDTs also feature advanced technology including ABS, modern control interfaces and active safety systems.
Mack Defense’s production facility at the Mack Experience Center has been in operation since 2021 following a $6.5 million investment to create a dedicated HDT production line, which leverages the capabilities and production work force of Mack’s main Lehigh Valley Operations (LVO), Macungie, Pennsylvania.
Mack Defense, a wholly owned subsidiary of Mack Trucks, is responsible for the sale of heavy-duty trucks to federal- and ministerial-level customers globally. For more information, please visit www.mackdefense.com.
Mack Defense, a wholly owned subsidiary of Mack Trucks, is responsible for the sale of heavy-duty trucks to federal- and ministerial-level customers globally. For more information, please visit www.mackdefense.com.
Mack Trucks is part of the Volvo Group, which is driving prosperity through transport and infrastructure solutions, offering trucks, buses, construction equipment, power solutions for marine and industrial applications, financing and services that increase customer uptime and productivity. Founded in 1927, the Volvo Group is committed to shaping the future landscape of sustainable transport and infrastructure solutions. The Volvo Group is headquartered in Gothenburg, Sweden, employs about 100,000 people and serves customers in almost 180 markets. In 2025, net sales amounted to about $49 billion. For more information, please visit www.volvogroup.com.