2025 International HV Series Specs | Raw Power, Digital Brains, and Vocational Dominance
There is a specific kind of confidence that comes from knowing the machine underneath you is over-engineered for the task at hand—whether that’s the way a Porsche Cayenne plants itself on an apex or the moment a Cummins-powered International HV hooks up to a load and simply pulls without breaking a sweat.
For the enthusiast who appreciates the fine line between luxury and capability, the International HV Series has always represented the pinnacle of purpose-built design. But for 2025, International has rewritten the rulebook. By integrating the revolutionary S13 Integrated Powertrain across the HV lineup, they haven’t just updated a truck; they’ve redefined the vocational segment . Think of it as the difference between a grand touring sedan with a carryover engine and a hybrid hypercar with a completely new architecture. This is a ground-up rethinking of how power, efficiency, and intelligence work together.
TL;DR
The 2025 International HV Series represents a massive leap forward in vocational truck performance, centered around the new S13 Integrated Powertrain. This isn’t just an engine; it’s a complete system including a 12.7-liter diesel (370–510 hp) and a purpose-built T14 automated manual transmission, designed to work in perfect harmony . For lighter vocational applications, the legendary Cummins B6.7 and L9 options remain, offering proven reliability with modern enhancements . The result is a lineup that boasts up to 8% better fuel economy, significant weight savings (over 400 lbs), and the elimination of active regeneration stops . For the operator, this means more time working, lower operating costs, and a driving experience that is both more comfortable and more controlled thanks to features like Bendix Wingman Fusion safety tech and the Diamond Logic® electrical system that automates complex tasks .
Key Takeaways
- The Star of the Show: The new S13 Integrated Powertrain (12.7L, up to 510 hp) is available on HV509, 515, 609, and 615 models, offering a 1.2-million-mile B10 design life and up to 8% better fuel economy .
- No More Active Regen: The S13 engine’s clean-burn design eliminates the diesel oxidation catalyst and EGR cooler, meaning the truck never has to stop working to perform a regeneration cycle .
- Proven Workhorses Remain: The Cummins B6.7 (325 hp) and L9 (up to 370 hp / 1,250 lb-ft) are still available for medium-duty applications, paired with rugged Allison automatics .
- Built for Maneuverability: The combination of a sloped hood, panoramic windshield, and the T14’s two dedicated crawler gears makes navigating tight job sites feel surprisingly easy for a Class 8 vehicle .
- Smart Integration: The Diamond Logic® electrical system now features more sensors and remote power modules, making body upfitting (like adding a dump body or mixer) simpler, safer, and more customizable than ever .
- Driver-Focused Safety: Standard and optional features, including LED headlamps with heating grids to melt snow and the Bendix Wingman Fusion collision mitigation system, bring a level of safety tech comparable to modern luxury SUVs .
The Heart of the Matter: Understanding the 2025 Powertrain Lineup
When you’re used to the precision of a German V8 or the seamless power delivery of a Lexus hybrid, you expect a powertrain to be more than just an engine. You expect a cohesive, responsive, and efficient system. The 2025 International HV Series delivers this in spades, offering two distinct powertrain philosophies depending on the model and application.
The S13 Integrated Powertrain: The Flagship Experience
For the heavier-duty models—the HV509, HV515, HV609, and HV615—International has introduced its crown jewel: the S13 Integrated Powertrain . Developed in collaboration with Scania of Sweden, this 12.7-liter inline-six is a masterpiece of engineering simplicity .
The “Integrated” part of the name is key. This isn’t a generic engine bolted to a transmission from a catalog. It’s a fully optimized system where the International S13 diesel, the T14 automated manual transmission, and the aftertreatment system are designed to work as a single unit .
- Raw Numbers: The S13 is available in ratings from 370 to 510 horsepower, but the truly impressive number is the torque. It produces an astonishing 1,850 lb-ft of torque available at just 900 RPM . For a luxury enthusiast, this is the equivalent of immense, immediate thrust from a standstill—no waiting for the turbo to spool, just pure pulling power the instant you need it.
- Revolutionary Simplicity: International’s engineers took a radical approach to emissions. Instead of adding more complex components, they focused on burning the fuel more completely. The S13 has no exhaust gas recirculation (EGR) cooler and no diesel oxidation catalyst (DOC) . This reduction in complexity means fewer parts that can fail.
- The “No-ReGen” Promise: This is a game-changer. Because of its efficient combustion, the S13 never needs to perform an active regeneration—the process where fuel is injected into the exhaust stream to burn off soot in the particulate filter. For a vocational truck that might be running a concrete mixer or a dump body, this means it never has to stop working to clean itself . It’s a productivity feature that directly impacts the bottom line.
The T14 Transmission: Crawler Gears and Seamless Shifts
Paired exclusively with the S13 is the T14 automated manual transmission. With 14 forward gears, including two dedicated crawler gears, it’s built for the worst conditions imaginable . Imagine navigating a muddy construction site or backing up a steep incline with a fully loaded mixer. The crawler gears allow for incredibly precise, low-speed control without riding the clutch. On the highway, the overdrive ratios let the engine loaf along at a low RPM, saving fuel and reducing noise in the cab .
Isn’t it remarkable how a transmission can provide both tortoise-like creeping precision for a job site and relaxed, efficient cruising for highway travel—all in one perfectly calibrated package?
The Proven Alternatives: Cummins B6.7 and L9
Not every job requires a 510-hp flagship. For medium-duty applications and models like the HV507, International continues to offer the legendary reliability of Cummins .
- Cummins B6.7: This 6.7-liter workhorse is perfect for applications like dump trucks and smaller vocational rigs. In a 2025 HV507 configuration, it delivers a very healthy 325 horsepower and 750 lb-ft of torque . It’s typically paired with an Allison 3000 RDS or 3500 RDS automatic transmission, known for its silky-smooth torque converter operation and bulletproof durability .
- Cummins L9: For those needing more grunt without stepping up to a Class 8 S13, the 8.9-liter L9 is the answer. It produces up to 370 horsepower and a massive 1,250 lb-ft of torque . This engine is a favorite for heavier medium-duty tasks and, as we saw in our previous post, provides the perfect foundation for serious expedition vehicles.
| Feature/Model | Best For | Engine & Power | Transmission | Key Innovation |
|---|---|---|---|---|
| HV507 / HV509 (Medium-Duty) | Municipal fleets, dump trucks, lighter construction | Cummins B6.7 (325 hp) or L9 (370 hp) [1][9] | Allison 3000/3500 RDS Automatic [1][9] | Proven reliability, smooth torque-converter operation |
| HV515 / HV615 (Heavy-Duty) | Heavy construction, mixers, severe service | International S13 (370–510 hp) [5][8] | International T14 Automated Manual [1][5] | S13 Integrated Powertrain, no-active regen, max efficiency |
Chassis and Handling: Built for the Real World
Performance isn’t just about what’s under the hood. For a luxury driver, it’s about how the vehicle responds to input and isolates you from the environment. The 2025 HV Series makes significant strides in this area, too.
Weight Savings and Frame Strength
The new HV chassis has been thoroughly re-engineered. International slashed 270 pounds from the main front crossmember alone, contributing to an overall weight reduction of more than 400 pounds on some models . By reducing the weight of the truck itself, it can either carry more payload or operate more efficiently. Furthermore, the frame rails are now galvanized for superior corrosion protection—a detail that ensures the structure beneath you remains sound for decades, much like the anti-corrosion warranties on premium European vehicles .
Visibility and Maneuverability: The Driver’s Perspective
One of the hallmarks of a premium vehicle is how easy it is to place on the road. The 2025 HV Series excels here with its sloped hood design, which dramatically improves forward visibility . The panoramic wide windshield further enhances this, allowing the driver to see obstacles, curbs, and job site workers more easily.
This focus on sightlines is the vocational equivalent of a 360-degree camera system in a luxury SUV—it gives the driver confidence in any situation. Optional LED headlamps now feature heating grids to melt snow and ice, ensuring you can see and be seen in the worst weather .
Suspension and Braking
For severe-duty applications, the HV Series can be spec’d with the Hendrickson Primaax EX rear air suspension. Available in a 52,000-lb configuration with air disc brakes, this system is engineered to minimize driveline vibration and control suspension windup under heavy loads, providing a more stable and controlled ride . The integration of Bendix Wingman Fusion—a suite of safety technologies including collision mitigation, adaptive cruise control, and lane departure warning—brings the HV Series firmly into the 21st century, offering a level of electronic safety net that luxury car owners have come to expect .
Real-World Impact: The HV in Action
To truly understand the performance specs, it helps to see them applied. The 2025 HV Series isn’t a theoretical design exercise; it’s already proving itself in the field.
The MoDOT Snow Plow vs. The Owner-Operator Hauler
A recent test drive highlighted just how versatile the HV platform is . Journalists drove two very differently spec’d trucks back-to-back:
- The MoDOT (Missouri Department of Transportation) Truck: This was a no-nonsense, “your tax dollars at work” snow-plow spec. It was powered by an L9 (360 hp) mated to an Allison automatic, with a 5.29 axle ratio for maximum low-speed grunt to push snow. It had S-cam drum brakes and a bare-bones interior.
- The “Quad” Owner-Operator Truck: This was the opposite. Painted in bright blue, it was powered by an S13 (475 hp) with the T14 transmission and a 3.58 axle ratio for comfortable highway cruising. It featured air-ride seats for both driver and passenger, chrome trim, and a much more luxurious interior.
Both trucks excelled at their intended tasks. The MoDOT truck was a beast at low speeds, while the “Quad” cruised effortlessly at 65 mph on the highway . This demonstrates the power of the spec’ing process: you can build an HV that performs exactly like a heavy-duty, go-anywhere machine or one that feels more like a cross-country tourer, all based on the same core platform.
A Pinnacle Expedition Platform
As mentioned in our previous breakdown, the 2025 HV507 chassis (with the 370 hp Cummins L9) is the foundation for the Bliss Mobil expedition vehicle . The performance specs here are about self-sufficiency and capability:
- Drivetrain: The 1,250 lb-ft of torque from the L9, channeled through the Allison transmission and a heavy-duty 4WD system with a rear locking differential, allows this 30,000-lb+ motorhome to conquer terrain that would stop most RVs in their tracks .
- Off-Grid Performance: The chassis’ electrical capacity and the Diamond Logic system’s flexibility allow it to integrate seamlessly with the Bliss Mobil’s 800Ah lithium battery bank, 1,000-watt solar array, and complex control systems .
“The International HV 507 4×4 that underpins the rig is in all respects over-engineered to endure the rigors of heavy industry and is thus ideally suited to overlanding.” — Expedition Portal, on the 2025 HV Bliss Mobil
Timeline: The Evolution of Vocational Power
The 2025 HV Series is the result of decades of innovation in heavy-duty trucking, paralleling the technological leaps seen in the luxury automotive world.
- Pre-2000s: The era of purely mechanical engines. Power was raw, but efficiency and emissions were afterthoughts. Driving required skill and muscle.
- 2000s: Introduction of EGR and early emissions controls. Trucks became cleaner but more complex, with new maintenance headaches.
- 2010s: The rise of selective catalytic reduction (SCR) and DEF. Fuel efficiency began to improve, and automated manual transmissions started gaining traction.
- 2018: International launches the first-generation HV Series with a “DriverFirst” focus, setting a new standard for comfort in the vocational segment.
- 2022: International introduces the S13 Integrated Powertrain for its on-highway LT and RH series, hinting at the future of vocational power .
- 2024: International unveils the redesigned 2025 HV Series with the S13 Integrated Powertrain, marking a major shift toward integrated, efficient, and intelligent vocational trucks .
- 2025 – Present: The new HV Series enters production. The modern vocational truck now features fully integrated powertrains, predictive diagnostics (OnCommand Connection), over-the-air programming, and safety tech that rivals modern luxury cars .
Frequently Asked Questions
What is the International S13 Integrated Powertrain?
It’s a complete, factory-engineered system consisting of a 12.7-liter International S13 diesel engine (370–510 hp) and a T14 automated manual transmission, designed to work together for maximum efficiency, performance, and reliability .
Does the 2025 HV Series require active regeneration?
No, if it’s equipped with the S13 engine. Its ultra-clean combustion design eliminates the need for an EGR cooler and diesel oxidation catalyst, meaning it never has to stop to perform an active regeneration cycle .
What engine options are available for the HV507 model?
The HV507 is typically powered by the proven Cummins B6.7, which produces 325 horsepower and 750 lb-ft of torque in its 2025 configuration .
How much weight did the 2025 redesign save?
International engineers reduced the weight of the new HV Series by more than 400 pounds, thanks in part to a redesigned front crossmember and the efficient packaging of the S13 powertrain .
What safety features are available on the 2025 HV Series?
The trucks can be equipped with Bendix Wingman Fusion, which includes features like collision mitigation, adaptive cruise control, lane departure warning, and more. They also feature optional LED headlamps with heating grids for better visibility in snow and ice .
Which transmission is paired with the S13 engine?
The S13 engine is mated exclusively to the T14 automated manual transmission, which features 14 forward gears including two dedicated crawler gears for precise low-speed control .
What is the B10 design life of the S13 engine?
The International S13 engine has a B10 design life of 1.2 million miles, meaning 90% of these engines are expected to reach that mileage without a major failure .
Conclusion
The 2025 International HV Series represents a new benchmark in vocational performance. By integrating a world-class powertrain like the S13, maintaining legendary Cummins options, and wrapping it all in a chassis designed for both driver comfort and digital intelligence, International has created a lineup that speaks directly to those who demand the very best from their machines. Whether you’re spec’ing a fleet of dump trucks or building the ultimate overland expedition vehicle, the HV Series offers a level of performance, efficiency, and smart technology that truly stands alone.
Have you driven the new S13-powered International? What’s your ideal spec for an HV Series truck? Share your thoughts and experiences in the comments below.
References:
- Construction Equipment: Test Reveals International HV Driving Characteristics
- Transport Topics: International Unveils Revamped Class 8 HV Vocational Trucks
- International Newsroom: International HV Raises the Bar for Vocational Work Truck
- International Used Truck Center: S13 Integrated Powertrain Specs
- Concrete Products: S13 Integrated Powertrain meets International HV Series
- Revista TyT: International Motors presenta el nuevo HV con S13
- Rush Truck Centers: 2025 International HV507 Inventory
- Expedition Portal: 2025 International HV Bliss Mobil
