Partnerships

Supporting a spectrum of construction and vocational operations, including repair and upkeep of airfields, roadways, landing strips, supply facilities, and motor pools, as well as snow removal and other civilian disaster-relief missions, the M917A3 Heavy Dump Truck is a commercial-based truck modified to meet mission-critical functionality that directly supports Army components. According to Mack Defense … Read more

From battle-tested reliability to next-gen innovation, Mack Defense is delivering on its promise to support the U.S. military with vehicles that go beyond expectations. Building on decades of trusted service — and the legendary Bulldog spirit — Mack Defense is entering a new chapter of growth and momentum. With the recent award of a new … Read more

ALLENTOWN, PA (Oct. 8, 2025) – Mack Defense announced today that it will feature the Mack Pioneer model in its booth #8333 at the Association of the United States Army (AUSA) Annual Meeting and Exposition, Oct. 13-15, at the Walter E. Washington Convention Center in Washington, D.C. “Mack Defense has long supported the U.S. military, … Read more

ALLENTOWN, PA (Oct. x, 2025) – Mack Defense announced today that it will feature the Mack Pioneer model in its booth #8333 at the Association of the United States Army (AUSA) Annual Meeting and Exposition, Oct. 13-15, at the Walter E. Washington Convention Center in Washington, D.C. “Mack Defense has long supported the U.S. military, … Read more

ALLENTOWN, PA (August 11, 2025) – Mack Defense has been awarded a new five-year contract to continue production of the U.S. Army’s M917A3 Heavy Dump Truck (HDT) for up to 450 trucks with a total contract value up to $221.8 million. This new agreement follows the successful fulfillment of the initial contract awarded in 2018 and comes after … Read more

     ALLENTOWN, PA (July 23, 2025) – David Hartzell, President of Mack Defense, sat down with Mark Willis on SiriusXM’s Road Dog Trucking radio show to reflect on how Mack’s long military heritage and reputation for rugged durability continue to shape its role in modern defense logistics and vehicle innovation. According to Road Dog’s own announcement … Read more

     ALLENTOWN, PA (May 19, 2025) – Following the initial development contract awarded last year, Mack Defense today announced they won the contract to produce two prototype vehicles for the next phase in the Medium Tactical Truck (MTT) program with the U.S. Marine Corps. The new family of vehicles will replace the Marine Corps’ … Read more

ALLENTOWN, PA March 24, 2025 – Mack Defense celebrated the production of its 500th M917A3 Heavy Dump Truck (HDT) in Allentown, Pennsylvania. The HDT, based off the commercially available Mack(r) Granite(r), is part of the previously announced firm-fixed price $296 million contract over seven years that the U.S. Army awarded Mack Defense in 2018, which allows … Read more

ALLENTOWN, PA (March 19th, 2025) – Mack Defense celebrated a major milestone Wednesday. They have now produced their 500th Heavy Dump Truck designed specifically for the U.S. Army. To celebrate they held an open house where they produce the vehicles at the Mack Experience Center in Allentown. You often think of Mack Trucks, the ones going … Read more

ALLENTOWN, PA (Jan. 23, 2025) – Mack Defense today announced that the U.S.military has ordered 103 Mack Defense M917A3 Heavy Dump Trucks (HDTs). The additional vehicles are part of the previously announced firm-fixed price $296million contract over seven years that the Army awarded Mack Defense in 2018, whichallows for up to 683 trucks. For this … Read more