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International Truck Launches Newly Designed International® LT® Series
New aero package, paired with International® S13 Integrated Powertrain, provides up to 15% fuel efficiency improvement compared to first-generation International A26 engine

LAS VEGAS (August 16, 2022) – International Truck today introduced the updated International® LT® Series. The next-generation Class 8 truck offers multiple safety and performance updates, including an improved aerodynamic package, as well as the option to specify the International® S13 Integrated Powertrain.

“The new International LT Series updates will deliver superior operating economy and optimal value to our customers,” said Chet Ciesielski, vice president, On-Highway Heavy Duty Truck Business. “We ensure the customer is top of mind for any product updates we make. We rely on their input and real-world feedback to optimize the design of our products. This latest LT Series update is a proof point of listening to our customers, ensuring they can maximize their fleet vehicles’ efficiency and performance.”

Fuel efficiency and performance are improved significantly with an updated aerodynamic package on the LT Series, ideal for line haul applications. This aero package includes:

  • Diesel Exhaust Fluid (DEF) and fuel fill closeouts allow air to flow smoothly over the chassis skirts.
  • Steer wheel closeouts and a modified lower skirt trim improves underbody air flow by restricting air flow through the wheel opening.  
  • A new roof extender improves air flow between the tractor and trailer gap.  

The updated front-end design includes a new bumper and grille style that aligns with recent updates to other International truck models. A new premium 9-inch sleeper mattress and flip-up bunk help maximize cab space for over-the-road drivers when they’re not operating the vehicle.  

Advanced driver safety enhancements to braking and collision mitigation systems further improve driver safety and comfort. This includes electronic parking brake technology to automatically engage the vehicle and trailer parking brakes if the driver forgets to set them.

“In terms of vehicle design updates, the main focus was to offer a simple, sturdy and strong design that will appeal to fleets and reduce their total cost of ownership,” said Ciesielski.

The new LT Series can be specified with the International S13 Integrated Powertrain, which is comprised of the 13-liter S13 engine, T14 14-speed automated manual transmission, and Dual Stage Aftertreatment system. The S13 Integrated Powertrain is designed to provide superior operating economy, stellar performance, and simplicity and serviceability to the North American commercial vehicle market.

Compared to Navistar’s first-generation International A26 engine specified with the 12-speed overdrive Eaton Endurant HD automated transmission, the new S13 Integrated Powertrain together with the latest updates to the LT Series delivers up to 15% gain in fuel efficiency. For more information on the S13 Integrated Powertrain, visit


About Navistar

Navistar, Inc. (“Navistar”) is a purpose-driven company, reimagining how to deliver what matters to create more cohesive relationships, build higher-performing teams and find solutions where others don’t. Based in Lisle, Illinois, Navistar or its subsidiaries and affiliates produce International® brand commercial trucks and engines, IC Bus® brand school and commercial buses, all-makes OnCommand® Connection advanced connectivity services, and Fleetrite®, ReNEWeD® and Diamond Advantage® brand aftermarket parts and includes a Brazilian manufacturer of engines and gensets, MWM Motores Diesel e Geradores. With a history of innovation dating back to 1831, Navistar has more than 14,500 employees worldwide and is a member of TRATON SE, a global champion of the truck and transport services industry. Additional information is available at

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For further information: Media contact: Erica Schueller,, 331-332-3310 Investor contact: Ryan Campbell,, 331-332-7280