2021 International® ProStar® Base

Year: 2021

Manufacturer: International®

Model Name: ProStar®

Trim Name: Base

Generic Type (Primary): Conventional without Sleeper EngineCummins ISX15

Engine Power: Cummins ISX15: 400 – 550 hp

Engine Torque: Cummins ISX15: 1,450 – 2,050 lb.-ft.

Call Us

Send us a message

2021 International® ProStar® Base

2021 International® ProStar®

Features may include:


Diamond logic®.

  • Offering nearly 200 available body integration and driver efficiency features, the innovative and customizable Diamond Logic® electrical system maximizes productivity, safety and performance.

Over-the-air programming.

  • Allows two-way engine communication and secure wireless engine reprogramming to optimize the performance of your vehicle, all while reducing service trips and downtime.


Tested and proven.

  • A wind tunnel. Six million miles on the road. Exhaustive internal testing. No detail spared to identify and address causes of downtime so you can always rely on maximum uptime.

Capable and efficient.

  • Take on any load, any distance, with the exceptional fuel economy and big bore power performance of the Cummins ISX15 engine.

Shaped To Streamline.

  • Because headwinds aren’t the only winds you’ve got to face on the road, the unique front end and cab design has the lowest wind averaged drag coefficient in the industry. It’s how you keep fuel costs low and productivity high.


Creature comforts.

  • Enjoy quiet and comfort when driving or resting, delivered by the strategically placed engine and cab mounts. Relax as the battery-powered HVAC eliminates engine idle and feel at home with cab and sleeper storage specifically designed with the driver’s lifestyle in mind.

Knowledge is power.

  • The first of its kind for commercial trucks, the Android®-based touchscreen, vehicle infotainment system brings real-time vehicle information you want including turn-by-turn navigation, maintenance alerts and available Wi-Fi connectivity.


Air disc brakes.

  • An available option for both front and rear applications, air disc brakes provide shorter, surer stops, better braking feel and more braking power for improved safety. All while offering longer lining and rotor life and requiring less maintenance.

Bendix® wingman® fusion™

  • Safety is the top priority of any fleet, including yours. That's why ProStar® is first-to-market with Bendix® Wingman® Fusion™ – an advanced safety solution that combines proven Bendix safety technologies to deliver comprehensive collision mitigation.

Electronic stability control

  • Assists in both rollover and vehicle under- and over-steer situations to help maintain a vehicle's lateral stability and steerability. As well as provides drivers with improved safety and greater confidence behind the wheel during heavy and slippery surface braking applications.


Cummins ISX15


Engine Power
Cummins ISX15: 400 - 550 hp


Engine Torque
Cummins ISX15: 1,450 - 2,050 lb.-ft.


Drive System
4x2 | 6x4 | 6x2


Allison TC-10: Fully Automatic /10-speed | Eaton Advantage: (SmartAdvantage Powertrain Solution) 10-speed | Eaton Manual: 9-speed, 10-speed, 13-speed, 15-speed, 18-speed | Eaton UltraShift+ PLUS Automated Manual: 10-speed, 13-speed, 16-speed, 18-speed | Tremec Manual: 10-speed


Sheppard Power | Ross Power


Brake System Type
Air Brake With ABS


Front Suspension
Mono-leaf: 12,000 - 13,200 lbs. | Taper leaf Spring: 12,000 - 14,000 lbs.


Rear Suspension
Air Ride: 20,000 - 46,000 lbs. | VariRate Spring: 23,500 lbs.


160 - 325 Amp




Day Spec: 113" BBC / 140-226" 4x2 / 146-226" 4x2 / 152-240" 6x4 / 122" BBC / 142-226" 4x2 / 160-252" 6x4 | Sleeper Spec: 113" BBC / 140-226" 4x2 / 152-240" 6x4 / 122" BBC / 146-226" 4x2 / 160-252" 6x4


113" BBC/50 BA | 122" BBC/50 BA


32,000 - 60,000 lbs.


Fuel Capacity
70 - 280 Gallon Total Capacity


Axle Capacity, Front
Dana Spicer: 12,000 - 14,000 lbs. | Hendrickson: 12,000 - 14,000 lbs. | Meritor: 12,000 - 14,000 lbs.


Axle Capacity, Rear
Single: Meritor: 23,000 lbs. / Dana Spicer: 23,000 lbs. | Tandem: Meritor: 40,000 - 46,000 lbs. / Dana Spicer: 40,000 - 46,000 lbs.


Frame Type
Heat Treated Alloy Steel 120,000 PSI


Switchback Hortizontal Aftertreatment, Horizontal Tail Pipe | Switchback Hortizontal Aftertreatment, Vertical Tail Pipe


Cab Construction
Day Cab | 56" Low Roof Sleeper | 56" Hi-Rise Sleeper | 73" Hi-Rise Sleeper | 73" Sky-Rise Sleeper


Cabover Interior
Deluxe | Premium | Eagle

Lights and Safety

Headlight Type
LED or Halogen


Up to Eight Batteries