US Army orders more 144 Mack Defense M917A3 Heavy Dump Trucks
M917A3 Heavy Dump Trucks. (Photo: Mack Defense)
Based on the commercially available Mack Granite model, the HDTs are operated by engineering units in construction and maintenance missions for infrastructure assets.
Mack Defense announced on 16 August that the US Army has placed an additional order for 144 M917A3 Heavy Dump Trucks (HDTs).
The HDTs are operated by engineering units in construction and maintenance missions for infrastructure assets, such as airfields, roadways, landing strips, supply facilities and motor pools.
Based on the commercially available Mack Granite model, the vehicles in the latest order are part of the firm-fixed price $296 million contract to be fulfilled over seven years that the US Army awarded to Mack Defense in 2018.
Under this agreement, the service previously had ordered 155 HDTs equipped with heavier-duty rear axles, all-wheel drive, increased suspension ride height and other ruggedised features.
The US Army received the first M917A3 Heavy Dump Truck in September 2021. Production of the HDTs at the Mack Experience Center began in Q1 2021, following an investment of $6.5 million to create a dedicated HDT production line at the facility.
Related Equipment in Defence Insight
More from Land Warfare
-
![DSEI 2025: Polaris displays new all-terrain vehicle with Alakran mortar system]()
DSEI 2025: Polaris displays new all-terrain vehicle with Alakran mortar system
The Polaris Government and Defense’s Military RZR (MRZR) Alpha 1KW was displayed at the Modern Day Marine exposition in the US earlier this year and with the Alakran mobile mortar weapon system at DSEI. The company outlined recent firing trials with the Alakran mobile mortar weapon system (MMWS) which was weeks after the company announced a major NATO deal.
-
![DSEI 2025: Thales creating new remote weapon station and Storm 2 counter-drone jammer]()
DSEI 2025: Thales creating new remote weapon station and Storm 2 counter-drone jammer
Thales launched Storm-H in 2012 as an EW system equipping individual dismounted troops, and a decade later revealed details to develop the improved and more powerful Storm 2.
-
![The integration between drones and land vehicles is accelerating]()
The integration between drones and land vehicles is accelerating
Drones and military ground vehicles are increasingly being designed to operate together as a single platform or even to convert crewed systems to automated ones.
-
![Denmark shuns US platform as it settles on SAMP/T air defence system]()
Denmark shuns US platform as it settles on SAMP/T air defence system
The acquisition, which is part of the country’s broader defence package worth DKK58 billion (US$9.2 billion), goes against the grain with many other European countries opting for the US’s popular Patriot platform.
