2021 International® DuraStar® Base

Year: 2021

Manufacturer: International®

Model Name: DuraStar®

Trim Name: Base

Generic Type (Primary): Cabover without Sleeper EngineCummins® B6.7 | Cummins® L9

Engine Power: Cummins® B6.7: 200 hp / up to 325 hp | Cummins® L9: Up to 350 hp

Engine Torque: Cummins® B6.7: 520 lb.-ft. / 750 lb.-ft. | Cummins® L9: 1,000 lb.-ft.

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2021 International® DuraStar® Base

2021 International® DuraStar®


Go beyond efficiency, durability and driver satisfaction. DuraStar® is the only truck in its class built to deliver for your business.

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.

Engines engineered to perform.

  • From the reliable efficiency of the best-selling Cummins B6.7 to the enduring brute strength of the Navistar N9, make the most of the horsepower and torque you need on every job, every day.

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


Commercial-grade confidence.

  • Made of high-strength, low-alloy (HSLA) double-sided galvanized steel and standard cold-rolled steel, the DuraStar® cab is designed and proven to exceed SAE and ECE rollover safety regulations.

Optimum chassis strength.

  • Give it all you’ve got - DuraStar® can take it. A nearly indestructible huck-bolted chassis boasts frame rails that range from 50,000 up to 120,000 psi for unparalleled durability and peace of mind.


A clear view.

  • There's no room on the job for guess work. So our easy-to-read instrument panels are designed to provide clear, precise information to help maximize driver safety.

Room to move.

  • The 82"-wide cab gives drivers and passengers room to maneuver, while the ergonomic design of the seats, steering wheel and instrument panel help reduce driver fatigue.

Breathe easy.

  • The job knows no season. That's why every DuraStar® is equipped with a best-in-class HVAC system to provide optimal driver comfort no matter what nature throws your way.


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.

Electronic stability control.

  • Available electronic stability control ensures DuraStar® vehicles maintain steadiness and steerability during heavy brake applications and braking on slippery surfaces, providing drivers with improved safety and greater confidence behind the wheel.


Cummins® B6.7 | Cummins® L9


Engine Power
Cummins® B6.7: 200 hp / up to 325 hp | Cummins® L9: Up to 350 hp


Engine Torque
Cummins® B6.7: 520 lb.-ft. / 750 lb.-ft. | Cummins® L9: 1,000 lb.-ft.


Drive System
4x2 SBA | 6x4 SBA


Allison: 1000, 2000, 3000 Series (HS, EVS, RDS) Automatic | Allison: 3000 TRV Series Automatic | Eaton® Fuller: 6-, 10-speed manual | Eaton® Procision: 7 speed Dual Clutch Automatic


TRW/Ross Power | Sheppard Power


Brake System Type
Hydraulic Disc With Four Channel ABS | Air Brakes With ABS


Front Suspension
Spring Parabolic Taper Leaf: 8,000-14,600 lbs.


Rear Suspension
Spring Single VariRate: 15,500 - 23,000 lbs. | Tandem, 4-Spring Multileaf: 34,000 lbs. (6x4)


12 Volt 160-320 amp


Diamond Logic® Electrical System


128 - 254"


4300: 107" BBC, 40" BA | 4400: 107" BBC, 40" BA


23,500 - 44,600 lbs.


Gross Combined Weight Rating
66,000 lbs.


Fuel Capacity
40 - 140 Gallon Non Polished and Polished Aluminum


Axle Capacity, Front
Dana Spicer: 8,000 - 14,000 lbs. | Meritor: 8,000 - 14,600 lbs.


Axle Capacity, Rear
Single (4x2): Meritor: 13,500 - 30,000 lbs. / Dana Spicer: 13,500 - 30,000 lbs. | Tandem (6x4): Meritor: 34,000 - 40,000 lbs. / Dana Spicer: 34,000 - 40,000 lbs.


Frame Type
Heat-Treated Alloy Steel: 120,000 PSI | High Strength Low-Alloy Steel: 50,000 - 80,000 PSI


Single, Horizontal, After-treatment Device Frame Mounted Right or Left Side, Back of Cab, Horizontal or Vertical Tailpipe | Switchback After-treatment Device Mounted Right Side Under Cab, Horizontal or Vertical Tailpipe | Horizontal After-treatment Device Mounted In-line, Back of Cab, Horizontal Tailpipe


Cab Construction
Day Cab | Extended Cab | Crew Cab


Cabover Interior
Deluxe | Premium

Lights and Safety

Headlight Type
Long Life Halogen


12 Volt, 2 to 3 batteries