2025 MACK, MD6, Medium Duty Trucks - Dump Trucks, CUMMINS ISB6.7, Automatic, NO CDL REQUIRED! New Mack MD6 dump truck in OKC! GVWR 25,995. Proven reliable 300hp Cummins 6.7L diesel & Allison 2500 RDS powertrain. 10 foot Maxx dump body with electric tarp and 3 stage cylinder, 36 side walls. 20 ton pintle hitch and chipper bar installed / included. *stock photos shown **currently in process of installing dump body, should be available mid February, 300 Horse Power, Multi Leaf Suspension, Wheels, 150 Wheel Base, , Axle, 5.86 Ratio, , VIN 1M2MDBAA6SS017848