International confirms US EPA 2027 readiness with proven S13® Integrated Powertrain

Photo: International Motors

International Motors announced Jan. 7 its 2027 S13® Integrated Powertrain meets the U.S. EPA’s emissions requirements for 2027 model-year trucks.

Developed from a clean-sheet design back in 2017, the 2027 S13 Integrated Powertrain meets stringent regulatory requirements while continuing to deliver simplicity, performance and reliability, according to International.

The 2027 S13 Integrated Powertrain carries over 90 percent of hardware from the current platform, which includes consistency in service tools, parts and technician training.

Customers can expect similar fuel economy, driving experience and powertrain weight as today’s S13 Integrated Powertrain, ensuring operational continuity and peace of mind.

Comparison: 2024 vs. 2027 standards

“We’ve been preparing for EPA 2027 for years,” said Dan Kayser, International’s executive vice president of commercial operations. “Our customers won’t face surprises, only the same proven powertrain. Our customers get a reliable solution without unnecessary complexity.”

The S13 Integrated Powertrain enables a compact, efficient design that meets nitrogen-oxide (NOx) regulations without unnecessary complexity.

Fleets across North America have logged more than 700 million miles with the S13 Integrated Powertrain, touting its fuel efficiency, service solutions, reliability and drivability.

Proven, unchanged

• S13 engine—no exhaust-gas recirculation (EGR) cooler, fixed-geometry turbo with smart diesel-exhaust fluid (DEF) dosing, dual overhead cam design, 23:1 compression ratio.

• T14® transmission—compact 14-speed with planetary gearset, electronic clutch actuator, integrated power take-off (PTO) options, and advanced oil-lubrication system.

• Dual-stage aftertreatment—same size and packaging, providing extended service intervals.

New for 2027

• S13 engine—variable valve timing (VVT), which enables variable valve braking (VVB) for improved braking performance, closed crankcase breather, oil centrifuge.

• T14 transmission—24-volt transmission-control module with predictive shifting using GPS/topography data.

• Electrical architecture—reduces complexity by using a standardized 24-volt electrical architecture across the entire powertrain platform; 24-volt alternator, starter and engine controllers for improved cold-crank performance and durability, while retaining a 12-volt cab and chassis electrical system for battery accessories and body controls.

The S13 Integrated Powertrain is approved for use with 100 percent renewable diesel, reducing well-to-wheel carbon footprint without any hardware changes.

Trials for 100 percent biodiesel (B100) compatibility are underway, reinforcing International’s commitment to practical sustainability.

Looking ahead

International said its S13 Integrated Powertrain was engineered with foresight—anticipating regulatory changes long before they arrived.

That vision now gives fleets a proven, compliant solution for EPA 2027 and beyond.