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Military dump truck shown from the front quarter low angle.
Newsby News/Media ReleaseOctober 15, 2025

Mack Defense Receives Order for 86 U.S. Army M917A3 Heavy Dump Trucks

Mack Defense received an order for 86 M917A3 Heavy Dump Trucks from the U.S. Army. This is the initial order for a new five-year contract awarded earlier this year.

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Three military dump trucks driving on a test track.
Newsby News/Media ReleaseAugust 11, 2025

Mack Defense Secures New 5-Year Contract for Army’s M917A3 Heavy Dump Truck

Mack Defense has been awarded a new five-year contract to produce another 450 M917A3 Heavy Dump Trucks (HDTs) for the U.S. Army.

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Camo background with inset image of a military truck and yellow headline that reads USMC Prototype.
Newsby News/Media ReleaseMay 19, 2025

Mack Defense to Make Prototypes of Medium Tactical Truck for U.S. Marine Corps

Mack Defense will provide two prototype Medium Tactical Trucks (MTT) for the U.S. Marine Corps. The new family of vehicles will replace the Marine Corps’ Medium Tactical Vehicle Replacement fleet.

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Mack military dump truck view from a low angle against a blue sky.
Newsby News/Media ReleaseMarch 24, 2025

Mack Defense Produces 500th U.S. Army M917A3 Heavy Dump Truck

Mack Defense has produced its 500th M917A3 Heavy Dump Truck (HDT) for the U.S. Army, a significant milestone in fulfilling the $296 million contract awarded in 2018. They are based on the commercially available Mack Granite.

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Mack Defense military dump truck
Newsby News/Media ReleaseJanuary 24, 2025

U.S. Army Orders 103 Mack Defense Heavy Dump Trucks

Mack Defense received an order from the U.S. Army for 103 M917A3 Heavy Dump Trucks as part of a contract awarded in 2018 that allows for the purchase of 683 dump trucks in total.

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Acela Monterra 6x6
Newsby StaffMay 28, 2024

Acela Truck Expands Canadian Footprint with Western Truck & Trailer

Acela Truck Company entered into a dealer agreement with Western Truck & Trailer Ltd to distribute Acela’s Monterra line of extreme-duty truck chassis for the Canadian market.

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Newsby News/Media ReleaseMarch 19, 2024

Mack Defense to Develop U.S. Marine Corps Medium Tactical Truck

The U.S. Marine Corps awarded Mack Defense a 12-month contract for the initial development of a new Medium Tactical Trucks (MTT) fleet. The new family of vehicles will replace the Marine Corps Medium Tactical Vehicle Replacement fleet.

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Newsby StaffMarch 1, 2021

U.S. Army Orders Heavy Dump Trucks from Mack Defense

The M917A3 HDT was spec’ed with heavier-duty rear axles, all-wheel drive, increased suspension ride height, and other features to meet the U.S. Army needs.

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Newsby StaffFebruary 20, 2020

Mack Defense Partners with XMCO Inc.

XMCO will now be responsible for the preparation of all IPS deliverables required to support testing and full materiel release of the system to the U.S. Army.

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Newsby StaffNovember 8, 2018

Mack Showcases Heavy-Duty Dump Truck for U.S. Army

Mack Defense showcased the Mack Granite-based M917A3 Heavy Dump Truck at the Association of United States Army 2018 show. Mack Defense was awarded a $296 million contract in May 2018 to produce 683 HDTs for the U.S. Army.

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