2025 Mack MD642 is equipped with a Cummins ISB6.7, 240HP Engine, and an Allison 2500 Highway Series 6 Speed Transmission. Comes with a Meritor #11,000 Front Axle and Meritor #17,000 Rear Axle. Mack AL190 Air-Mack Ride Suspension with Suspension Levelling Air Dump. A Rear Axle Ratio of 5.57. CARB and EPA Certified from Cummins Diesel Engine. 90 Gallon 22" Aluminum Round Fuel Tank. 11R22.5 G Bridgestone R268 Exopia Tires in 22.5xc8.25 Accuride Powder Coated White Steel Disc Wheels. Please call for more details!