2025 Mack MD6 Cab & Chassis – Powered by a Cummins ISB6.7 250 HP engine and 6-speed Allison 2500 RDS automatic transmission, this truck delivers reliable performance with full CARB and EPA compliance. Equipped with drum brakes, air suspension, 90-gallon fuel tank, full diff lock, and standard cruise control, it’s built for efficiency and durability in medium-duty applications.