Cummins is reinventing the heavy-duty engine category with two unique X15™ engines. The X15 Performance Series delivers unprecedented power, with up to 605 hp and 2050 lb-ft peak torque. The X15 Efficiency Series uses an optimized combustion recipe to achieve the highest compression ratio in the industry, for unmatched thermal efficiency, fuel economy and responsiveness.
Plus, every X15 engine comes with over-the-air calibration capability, a Single Module™ aftertreatment system, the most powerful engine brake in the industry, extended service intervals and Connected Diagnostics,™ for maximum uptime.
The X15 was subjected to the largest field test in company history, with over 8 million real-world test miles run before it was launched. We don't just talk about our commitment to providing customers with the most dependable product in the market. We prove it.
X15 Performance Series.
Cummins has dominated the big-bore engine category over the past three decades, and our new X15 Performance Series leaves the competition even further in the dust. Virtually every critical component, from the power cylinder and camshaft to the turbo and fuel system, has been upgraded to deliver the best performance and durability in the industry with faster throttle response. Ratings range from 485 hp to 605 hp, with peak torque up to 2050 lb-ft, making it the most powerful engine available in a truck.
The X15 Performance series also gives you stronger braking power at lower rpm – over 450 bhp at 1500 rpm, and up to 600 bhp at 2100 rpm. At a full 15 liters in size, the X15 doesn't have to work as hard as 10- to 13-liter engines, resulting in better fuel economy, longer life and better resale value down the road.
If you're looking to kick butt on the hills, the X15 Performance Series is the engine for you.
Download the X15 Performance Brochure