The 6.7L Cummins® Turbo Diesel I6 engine delivers exceptional responsiveness and impressive torque ratings, enabling remarkable towing capability without sacrificing efficiency. The six-speed automatic transmission is a technologically advanced, electronically controlled gearbox with optimized gear ratios designed specifically for the 6.7L Cummins Turbo Diesel I6 engine. It delivers smooth, responsive performance while minimizing noise, vibration, and harshness levels.