International Prostar: The Ultimate Guide to the Specs, Features, Performance and Pricing

International Prostar

The International Prostar is one of the most popular heavy-duty trucks on the road today. This versatile Class 8 truck offers incredible power, efficiency, and customization options. In this guide, we’ll explore everything you need to know about the International Prostar’s performance, interior features, engine specs, pricing, and more.


The International Prostar is International Truck’s flagship highway tractor. This innovative truck provides the perfect blend of power, efficiency, comfort, and customization options. International first introduced the Prostar in 2007 and it quickly became a top seller.

With its sloped hood and aerodynamic shape, the International Prostar offers better fuel economy compared to previous International models. Drivers will appreciate the spacious, modern cab that offers plenty of comfort and technology features. For fleet owners, the Prostar delivers low operating costs and maximum uptime.


The International Prostar lives up to its reputation for powerful performance. This Class 8 truck is equipped for hauling heavy loads up steep grades and traveling long distances.

Key performance features include:

  • Cummins X15 engine with up to 605 HP and 2050 lb-ft of torque
  • Optional PACCAR MX-13 engine with up to 510 HP and 1850 lb-ft of torque
  • Manual, automated manual, and automatic transmission options
  • Front and rear axle options from 12,000-23,000 lbs
  • GCW up to 120,000 lbs

With these robust mechanical features, the International Prostar can handle payloads up to 82,000 lbs. It provides low-end torque for quick acceleration and high-end power for cruising at highway speeds.

There are several reasons why the International Prostar continues to be one of the best-selling heavy-duty trucks:

Reliability – The International Prostar has a reputation for long-lasting durability and reliability. Fleets achieve less downtime and lower repair costs compared to other trucks.

Efficiency – With aerodynamic styling and fuel-efficient engine options, the Prostar offers excellent fuel economy. Fleets save money on fuel costs.

Comfort – Drivers enjoy the spacious, quiet cab with plenty of amenities. This helps reduce driver fatigue.

Customization – Fleets can spec the Prostar to perfectly match their operations and needs. The truck is available in a wide variety of configurations.

Driver appeal – Drivers praise the Prostar for its power, comfort, and modern styling. This makes it easier for fleets to recruit and retain qualified drivers.

International Prostar


Here are some key specs for the International Prostar:

Years2007 – 2021
Model VariationsDay Cab, Sleeper Cab
Hoods113” BBC Sloped Hood
SuspensionSpring, Air Ride
HorsepowerUp to 605 HP
Transmission (Eaton Fuller)Manual, Automated Manual, Automatic
WheelbaseUp to 318″
GVWRUp to 120,000 lbs
TorqueUp to 2050 lb-ft
Sleeper Size36″, 46″, 61″
Interior Trim TypeVinyl, Cloth, Leather
Payload CapacityUp to 82,000 lbs
Wheelbase Options156”, 176”, 200”, 212”, 218”, 238”, 252”, 260”, 318”


The interior of the International Prostar provides a comfortable and convenient environment for drivers. Key features include:

  • Spacious cabin with multiple storage spaces
  • Flat-bottom steering wheel with integrated controls
  • Digital dash display with virtual gauges
  • Optional heated and ventilated seats
  • Dual-zone climate control system
  • Overhead console with storage, lighting, and more
  • Available refrigerator, inverter, TV, and other driver appliances


The International Prostar offers two robust diesel engine options:

Cummins X15

  • Up to 605 HP and 2050 lb-ft of torque
  • 14.9 liter displacement
  • Variable geometry turbocharger
  • Selective Catalytic Reduction emissions system


  • Up to 510 HP and 1850 lb-ft torque
  • 12.9 liter displacement
  • Common rail fuel injection
  • Variable geometry turbocharger
  • Cooled exhaust gas recirculation


To meet the needs of long-haul drivers, the International Prostar is available with spacious, comfortable sleeper berths. Popular options include:

  • 36-inch flat-top sleeper – Provides a single bunk plus storage cabinets
  • 46-inch mid-roof sleeper – Features a walk-through design and ample headroom
  • 61-inch high-rise sleeper – Offers a split-level design with a lower bunk

Sleepers include features like a mattress, privacy curtains, vents, lighting, and optional appliances. This allows drivers to rest and recharge while out on the road.

Related Post: International 4300

International Prostar

The customizable and still-reliable International Prostar

One of the International Prostar’s key strengths is the wide range of configuration options available. Fleets can customize the truck to perfectly match their hauling needs.

At the same time, the Prostar maintains its renowned reliability and durability. No matter how it’s equipped, fleets benefit from maximum uptime and lower maintenance costs. It’s the ideal blend of flexibility and dependability.

The successor to the International Prostar

In 2021, International Trucks unveiled the next generation International HX Series to succeed the Prostar. This new line of Class 8 trucks offers updated styling, greater efficiency, advanced safety technologies, and more.

The HX Series trucks build on the strengths of the Prostar while introducing modern enhancements. This includes aerodynamic improvements for increased fuel economy, upgraded lighting, collision mitigation systems, and advanced telematics.

While the HX Series has replaced the Prostar for new truck orders, the Prostar remains a popular model on the used truck market. It continues to have a strong reputation as a durable, long-lasting highway tractor.

How much does an International Prostar cost?

As a fully loaded Class 8 tractor, the International Prostar has a higher price tag than lighter trucks. Cost depends on factors like:

  • New vs used
  • Engine, transmission, and axle configuration
  • Sleeper and interior options
  • Additional features and technologies
Year RangeTandem Axle PriceTri-Axle Price
New 2021-2022$140,000 – $180,000$160,000 – $200,000
Used 2015-2020$50,000 – $90,000$60,000 – $110,000
Used 2010-2014$30,000 – $60,000$40,000 – $80,000
Used 2005-2009$20,000 – $45,000$25,000 – $55,000

To determine the total cost of ownership, fleets also need to consider insurance, financing costs, maintenance, fuel, and more. The International Prostar offers low operating costs to help maximize return on investment.

International Prostar


Q: What is the fuel tank capacity of the International Prostar?

A: The International Prostar has a fuel tank capacity ranging from 100 gallons to 160 gallons. Long-haul fleets often opt for the larger 160-gallon tanks.

Q: What is the engine warranty on the International Prostar?

A: New International Prostar trucks come with a 2-year/250,000-mile base engine warranty. Additional coverage options are available.

Q: How long is the hood on the Prostar?

A: The International Prostar has a 113-inch BBC (bumper to back of cab) length. This sloped hood provides an aerodynamic advantage.

Q: What is the International Prostar’s towing capacity?

A: Depending on the configuration, the Prostar can tow up to 43,000 lbs. The truck is well-suited for pulling heavy loads.

Q: Does the International Prostar require diesel exhaust fluid (DEF)?

A: Yes, the Cummins and PACCAR engines equipped in the Prostar utilize selective catalytic reduction (SCR). This requires DEF to meet emissions standards.

Final Thought

With incredible power and efficiency, driver-friendly comfort, and unmatched customization, it’s easy to see why the International Prostar continues to lead the way for linehaul tractors. This innovative Class 8 truck offers the total package fleets need to maximize productivity and profitability. For truckers hauling heavy loads across long distances, the International Prostar is tough to beat.