Cummins Inc. is bringing the high-horsepower QSK95 engine to mining applications. Producing up to 4,400 hp, the QSK95 is not only Cummins most powerful engine: it’s the most powerful in the ULTRA-class truck category. It offers optimum power-to-weight ratio for 400T haul trucks, 3,800 hp rating for increased fuel efficiency, and power at high altitude thanks to specially designed single-stage turbocharging.