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International DuraStar
An International DuraStar in use as a moving van
Manufacturer Navistar International Corporation
Also called International 4000 Series
Production 2002-present
Predecessor International 4000 Series (1989)
Class Class 5 & 6
Body style(s)


  • Tractor
  • Straight truck


  • Cowled chassis
  • Cutaway cab
Layout Conventional 4x2
Conventional 6x4
Engine(s) Diesel
Transmission(s) Manual
Wheelbase 128–254 inches (3,251–6,452 mm)
Related International 3300
International RXT
International Workstar
Ford F-650/F-750

The International DuraStar, originally introduced as the International 4000 Series, is a medium-duty truck produced by Navistar International. First produced in 2002, it is the successor to the 4000 Series of the 1990s.

It is available in three variants, which are built on the same chassis. They differ in engines, drivetrains, brakes, and cargo capacity. It is a popular commercial platform used in a wide variety of applications, such as emergency services, towing, flatbed truck and as a cargo box truck. Variants of the Durastar are commonly used as a platform for both school buses and commercial buses.

Current variants

A DuraStar serving as a cabin service truck at an airport



The 4100 model has a wheelbase from 140" to 217", is powered by an International VT 365 and utilizes hydraulic brakes. It comes with an Allison 1000 HS/RDS 6-speed automatic transmission or a Fuller 6-speed manual. Its front axle capacity is 7,300 lb (3,310 kg). Rear axle capacity is 10,500 lb (4,760 kg). standard, 12,200 lb (5,530 kg) optional.[1]


The 4300 model has a wheelbase from 128" to 254", is powered by an International DT466 and utilizes either hydraulic or air brakes. It comes with Fuller 6 or 7-speed manual transmissions or Allison 2000 and 3000 Series automatic transmissions. Its front axle capacity is 8000-14000 lb. Rear axle capacity is 12,200-23,000 lb.[2]


The 4400 model has a wheelbase from 140" to 254", is powered by an International DT570 / Maxxforce 9 and utilizes air brakes. Transmissions include Fuller 6, 7, and 10-speed manuals along with Allison Vocational 3000 & 3500 Series automatics. Its front axle capacity is 8,000-14,000 lb. Rear single axle capacity is 13,500-26,000 lb.[3]

The 4400 is also available as a tractor.[4]


The 4300 and 4400 are also available in Lo-Profile configurations, with a lower platform for easier cab and loadbed access. They differ in axle capacity as follows: [5][6]

  • Front- 8,000 - 9,000 lb (4,100 kg).
  • Rear- 12,200 - 19,000 lb (8,600 kg).
  • Front- 8,000 - 19,000 lb (8,600 kg).
  • Rear- 13,500 - 19,000 lb (8,600 kg).


Main article: International 3300

Like the 4000-series before it, the DuraStar serves as a popular platform for bus manufacturers.

International 3200

  • The 3200 is sold with a cab, as it is designed for cutaway-cab applications for second-stage manufacturers. Available with the Maxxforce7 engine.
  • The 3300 is sold as a cowled chassis, intended primarily for conventional-type (Type C) school buses. Available with Maxxforce7 and MaxxforceDT engines.


International Durastar Engines
Engine Name Engine Type Horsepower Torque Availability
MaxxForce 7
6.0L V8 (VT365)
6.4L V8 (MaxxForce 7)
200-230HP 560 ft-lbf to 620 ft-lbf 3200, 3300, 4100, 4300
MaxxForce DT/DT466 7.6L inline-6 210-255 hp 560 ft-lbf to 660 ft-lbf 3300, 4300, 4400
MaxxForce 9 9.3L inline-6 225-300hp 620 ft-lbf to 860 ft-lbf 4400

Hybrid trucks

In 2007, Navistar's International Truck and Engine Corporation became the first company to enter hybrid commercial truck production, with the International DuraStar Hybrid diesel-electric truck. International Truck and Engine teamed with the Hybrid Truck Users Forum (HTUF), a consortium of utility industry customers, Eaton Corporation, the US Federal Government and the Calstart organization to assist with the cost of bringing the technology to market. It also provides direct customer feedback and support. [7]

See also

External links


Smallwikipedialogo.png This page uses some content from Wikipedia. The original article was at International Durastar. The list of authors can be seen in the page history. As with Tractor & Construction Plant Wiki, the text of Wikipedia is available under the Creative Commons by Attribution License and/or GNU Free Documentation License. Please check page history for when the original article was copied to Wikia

  1. [1] International Trucks website- 4100
  2. [2] International Trucks website- 4300
  3. [3] International Trucks website- 4400
  4. [4] International Trucks website- 4400 4x2
  5. [5] Interntaional Trucks website- 4300 Lo-Profile
  6. [6] International Trucks website- 4400 Lo-Profile
  7. Electric Drive Transportation Association