International® S13® Integrated Powertrain
THE INTERNATIONAL® LT® WITH THE S13® INTEGRATED POWERTRAIN LEADS THE ON-HIGHWAY AERO CATEGORY IN FUEL ECONOMY BY AT LEAST 5%.*
At Carrier Truck Centers, we’re proud to offer the most advanced and fuel-efficient powertrain International® has ever built: the S13® Integrated Powertrain. Available in the LT®, RH™, HX®, and HV™ series, this powertrain sets a new benchmark for efficiency, reliability, and performance.
In fact, the International® LT® with the S13 Integrated Powertrain leads the on-highway aero category by at least 5% in fuel economy—delivering real savings where it matters most.*
With up to 515 HP and 1,850 lb-ft of torque, the S13 Integrated Powertrain is a fully optimized system, where the engine, transmission, and aftertreatment work seamlessly together. This integration ensures maximum performance, lower operating costs, and improved sustainability, whether you're on-highway or tackling off-road jobs.
Backed by over 4 million miles of real-world testing across diverse terrains, the S13 Integrated Powertrain is International’s most advanced and final diesel powertrain—engineered to deliver exceptional efficiency and reliability for years to come.
*The International® LT® with S13® Integrated Powertrain was tested head-to-head using TMC Type IV testing methodology against competitive on-highway aero models with comparable specifications: Freightliner Cascadia AeroX DD15, Kenworth T680 MX13, Volvo VNL760 D13. Testing proved the International LT with S13 Integrated Powertrain to be at least 5% more fuel efficient than these models. The International LT with S13 Integrated Powertrain uses up to 3.5% more DEF per gallon of fuel compared to comparable on-highway aerodynamic models.

Maximize Your Fleet’s Potential
The International® S13 Integrated Powertrain is engineered to push the boundaries of fuel efficiency, performance, and long-term reliability. Every component—engine, transmission, and aftertreatment—works in seamless harmony, delivering a driving experience that’s more powerful, more efficient, and easier to maintain.
Intelligent Performance
- Seamless Power Delivery – With up to 515 HP and 1,850 lb-ft of torque, the S13 delivers the performance your drivers need to tackle any job.
- Smart Transmission – The T14 Automated Manual Transmission is fine-tuned to the engine for smooth shifting and optimal efficiency.
- Dual Stage Aftertreatment – No EGR cooler means fewer moving parts, reducing maintenance and improving reliability.

Built for Long-Term Reliability
The S13 is designed with longevity and uptime in mind. Fewer components, a smarter design, and improved aftertreatment efficiency mean you’ll spend less time in the shop and more time on the road.
- Lower maintenance costs thanks to an optimized powertrain layout
- More uptime with a robust system designed to go the distance
- Easier servicing with fewer emissions-related issues
The Lightest 13L Engine in North America
A lighter engine means more room for payload and greater fuel savings. The S13 Integrated Powertrain is the lightest in its class, making it an ideal choice for efficiency-focused fleets looking to maximize profitability.
Ready to Upgrade to the S13?