International DuraStar

International DuraStar
Body and Chassis
Layout	4x2 6x4
Related	Ford F-650/F-750 Super Duty (2000–2015) International TerraStar International 7300/7400, WorkStar, HV International 8500/8600, TranStar, RH International ProStar, LT International LoneStar
Chronology
Predecessor	International 4000 series (1989-2001)

International DuraStar
Navistar International
aka	International 4000 Series
Production	2001-present
Class	Class 5 Class 6 Class 7
Body Style	2-door truck 4-door truck Semitractor
Length	length - type here
Width	Width - type here
Height	Height - type here
Wheelbase	wheelbase - type here
Weight	Weight - you get the point
Transmission	Allison 1000 HS Series Allison 1000 RDS Rugged Duty Series Allison 1000 EVS Series Allison 2350 HS/RDS Series
Engine	6.6 litre Duramax Diesel V8 8.1 litre Vortec V8
Power	325 hp @ N/A rpm 450 lb-ft of torque @ N/A rpm 300 hp @ N/A rpm 520 lb-ft of torque @ N/A rpm (optional) 330 hp @ N/A rpm 620 lb-ft of torque @ N/A rpm (optional)
Similar	DuraStar 4100: Sterling Bullet 5500 Ford E-550 (with a 2009 front end) Ford F-550 (2008–2010) Freightliner Business Class M2 100 Hino 185 Chevrolet Kodiak/GMC Topkick C5500 Kenworth T-170/Kenworth T-180 Peterbilt 325/Peterbilt 535 DuraStar 4200: Xos MDXT Freightliner Business Class M2 106 Ford F-650 (2000–2015) Peterbilt 337/Peterbilt 537 Chevrolet Kodiak/GMC Topkick C6500 Hino 238/258/268/338 Mack MD Kenworth T-270/Kenworth T-280 Sterling Acterra Dina HTQ KrAZ-5233 DuraStar 4300: Xos MDXT Freightliner Business Class M2 106 Ford F-750 (2000–2015) Peterbilt 337/Peterbilt 537 Chevrolet Kodiak/GMC Topkick C7500 Hino 238/258/268/338 Mack MD Kenworth T-370/Kenworth T-380 Sterling Acterra Dina HTQ KrAZ-5233 DuraStar 4400: Xos MDXT Freightliner Business Class M2 106 Ford F-850 (2000–2015) Peterbilt 337/Peterbilt 537 Chevrolet Kodiak/GMC Topkick C8500 Hino 238/258/268/338 Mack MD Kenworth T-470/Kenworth T-480 Sterling Acterra Dina HTQ KrAZ-5233
Designer	Designer (lead designer if it was a team effort)

The International DuraStar, originally introduced as the International 4000 Series, is a line of medium-duty trucks produced by Navistar International. First produced in 2002, it is the successor to the 4000 Series of the 1990s. Developed as a Class 6-7 product range, the 4000/DuraStar was slotted below the 8000/TranStar regional-haul semitractor, with the Class 5 International TerraStar (2010–2015) serving as the smallest International conventional-cab product range, the DuraStar competes primarily against the Freightliner Business Class M2 106, Hino 238/338 and the Kenworth T-270/T-370.

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, tow truck, 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.

Blue Diamond Truck Alliance

In early 2001, Navistar entered into a 50/50 joint venture to produce commercial vehicles with Ford Motor Company, officially named Blue Diamond Truck, LLC. Under the agreement, Navistar assembled medium-duty trucks for both companies in its facility in General Escobedo, Mexico.

Though externally different, both Ford and Navistar model lines would share a common chassis; the medium-duty Ford F-Series (which had already entered production in 2000 at General Escobedo) shared its cab with the F-Series Super Duty line (F-250 through F-550). Though smaller F-Series vehicles used Navistar-supplied diesel engines, medium-duty Fords used engines supplied by Cummins and Caterpillar.

Serving as the debut line of the NGV (Next-Generation Vehicle) cab structure, the new International 4000 series sourced its engines from within the company, carrying over the T444E V8 and DT466E I6 diesel (later VT365, DT466, and MaxxForce engines) from the previous 4000 series (sharing other commercial-grade drivetrain components with Ford and other medium-duty vehicles).

In 2015, Ford ended its stake in the joint venture; as part of a redesign, production of medium-duty trucks was relocated from Mexico to Ohio (replacing the E-Series van), with Navistar continuing production at General Escobedo.

In 2000, Ford introduced the medium-duty Ford F-Series (the F-650/F-750 Super Duty), with International introducing its 4000 series truck line in early 2001.

First generation

4000 series (2001-2007)

In February 2001, Navistar released its all-new 4000 series (after-International Harvester Auto Wagon, International F-Truck, International Model S, International Six Speed, International Harvester A-3, International Harvester B-3, International C-30 Truck, International CS-30 Truck, International Harvester DS-30 Truck, International Harvester K-6, International Harvester KB-6, International Harvester L-160, International Harvester R-160, International Harvester Loadstar (1962-1971), International Harvester Loadstar with tilting hood (1972-1978), International Harvester S-Series Medium-Duty (1978–1989), and International 4000 Series (1989–2002))/(after-International Harvester Auto Wagon, International F-Truck, International Model S, International Six Speed, International Harvester A-3, International Harvester B-3, International C-30 Truck, International CS-30 Truck, International Harvester DS-30 Truck, International Harvester K-6, International Harvester KB-6, International Harvester L-160, International Harvester R-160, International Harvester S-160, International Harvester A-160, International Harvester B-160, International Harvester Loadstar (1962-1971), International Harvester Loadstar with tilting hood (1972-1978), International Harvester S-Series Medium-Duty (1978–1989), and International 4000 Series (1989–2002))/(after-International Harvester Auto Wagon, International F-Truck, International Model S, International Six Speed, International Harvester A-3, International Harvester B-3, International C-300 Truck, International CS-300 Truck, International Harvester DS-300 Truck, International KS-6 COE, International KBS-6 COE, International Harvester L-160 COE, International Harvester R-160 COE, International Harvester S-160 COE, International Harvester AC-160, International Harvester BC-160, International Harvester Loadstar (1962-1971), International Harvester Loadstar with tilting hood (1972-1978), International Harvester S-Series Medium-Duty (1978–1989), and International 4000 Series (1989–2002)), dubbed as "High Performance Trucks". Developed in the Blue Diamond Truck joint venture with Ford, the 4000 series marked the first completely new truck line from International since the 1979 S series. Sharing its chassis with the medium-duty Ford F-Series (introduced in 2000), the International 4300/4400 retained the DT466 and DT530 diesels of their predecessors. For versions equipped with automatic transmissions, electronics for the engine and transmissions were retuned to optimize throttle and shifting response, to increase both performance and fuel economy. To increase forward visibility, the size of the windshield was increased by over 60%, with additional attention paid to improvements in ventilation.

At the launch of the 4000 series, the standard 4300 and higher-GVWR 4400 were introduced as replacements for the previous 4900 model series. In 2002, the lower-GVWR 4200 was introduced as the replacement for the 4700 series, marking the introduction of the VT365 engine. In 2006, the 4100 was introduced, expanding the model line into the Class 5 segment; the model was discontinued a single year of production. The 4200, 4300, and 4400 were produced in both a standard and low-profile frame. The 4400 was also produced in a semitractor; sitting 4 inches higher than the chassis truck, the 4400 tractor was the only version offered with the DT570 engine as an option.

DuraStar (2008-2018)

For 2008 (after-International Harvester Auto Wagon, International F-Truck, International Model S, International Six Speed, International Harvester A-3, International Harvester B-3, International C-30 Truck, International CS-30 Truck, International Harvester DS-30 Truck, International Harvester K-6, International Harvester KB-6, International Harvester L-160, International Harvester R-160, International Harvester Loadstar (1962-1971), International Harvester Loadstar with tilting hood (1972-1978), International Harvester S-Series Medium-Duty (1978–1989), International 4000 Series (1989–2002), and International DuraStar (2001-2007))/(after-International Harvester Auto Wagon, International F-Truck, International Model S, International Six Speed, International Harvester A-3, International Harvester B-3, International Harvester C-30 Truck, International Harvester CS-30 Truck, International Harvester DS-30 Truck, International Harvester K-6, International Harvester KB-6, International Harvester L-160, International Harvester R-160, International Harvester S-160, International Harvester A-160, International Harvester B-160, International Harvester Loadstar (1962-1971), International Harvester Loadstar with tilting hood (1972-1978), International Harvester S-Series Medium-Duty (1978–1989), International 4000 Series (1989–2002), and International DuraStar (2001-2007))/(after-International Harvester Auto Wagon, International F-Truck, International Model S, International Six Speed, International Harvester A-3, International Harvester B-3, International Harvester C-300 Truck, International Harvester CS-300 Truck, International Harvester DS-300 Truck, International KS-6 COE, International KBS-6 COE, International Harvester L-160 COE, International Harvester R-160 COE, International Harvester S-160 COE, International Harvester AC-160, International Harvester BC-160, International Harvester Loadstar (1962-1971), International Harvester Loadstar with tilting hood (1972-1978), International Harvester S-Series Medium-Duty (1978–1989), International 4000 Series (1989–2002), and International DuraStar (2001-2007)), coinciding with the introduction of the International ProStar and International LoneStar, Navistar revised the branding of its truck model lines. In line with nomenclature previously used by International Harvester, truck lines adopted a "xxxxStar" naming scheme, with the 4000 series adopting the DuraStar model name. This change was completed in its entirety for the 2010 model year. In another revision, to comply with 2007 emissions regulations, the powertrain lineup underwent extensive revision, with the 6.0L VT365 V8 replaced by the 6.4L MaxxForce 7 V8. The DT inline-6 engine family underwent revisions as well, with the DT466 becoming the MaxxForce DT and the DT570 becoming the MaxxForce 9, adopting four-valve cylinder heads and exhaust gas recirculation to reduce emissions.

Second generation

For 2019 model-year production (after-International Harvester Auto Wagon, International F-Truck, International Model S, International Six Speed, International Harvester A-3, International Harvester B-3, International C-30 Truck, International CS-30 Truck, International Harvester DS-30 Truck, International Harvester K-6, International Harvester KB-6, International Harvester L-160, International Harvester R-160, International Harvester Loadstar (1962-1971), International Harvester Loadstar with tilting hood (1972-1978), International Harvester S-Series Medium-Duty (1978–1989), International 4000 Series (1989–2002), International DuraStar (2001-2007), and International DuraStar (2008-2018))/(after-International Harvester Auto Wagon, International F-Truck, International Model S, International Six Speed, International Harvester A-3, International Harvester B-3, International C-30, Truck, International CS-30 Truck, International Harvester DS-30 Truck, International Harvester K-6, International Harvester KB-6, International Harvester L-160, International Harvester R-160, International Harvester S-160, International Harvester A-160, International Harvester B-160, International Harvester Loadstar (1962-1971), International Harvester Loadstar with tilting hood (1972-1978), International Harvester S-Series Medium-Duty (1978–1989), International 4000 Series (1989–2002), International DuraStar (2001-2007), and International DuraStar (2008-2018))/(after-International Harvester Auto Wagon, International F-Truck, International Model S, International Six Speed, International Harvester A-3, International Harvester B-3, International Harvester C-300 Truck, International Harvester CS-300 Truck, International Harvester DS-300 Truck, International KS-6 COE, International KBS-6 COE, International Harvester L-160 COE, International Harvester R-160 COE, International Harvester S-160 COE, International Harvester AC-160, International Harvester BC-160, International Harvester Loadstar (1962-1971), International Harvester Loadstar with tilting hood (1972-1978), International Harvester S-Series Medium-Duty (1978–1989), International 4000 Series (1989–2002), International DuraStar (2001-2007), and International DuraStar (2008-2018)), the medium-duty DuraStar product range underwent its most extensive revision since its 2001 debut and was renamed to International MV Series. In line with revisions to International Class 8 product lines, the MV Series introduced a number of updates to the cab interior. Externally distinguished by larger doors and side windows, the quarter windows of the DuraStar were replaced with a single-piece side window with a lower windowsill. The dashboard underwent extensive changes, with the previous instrument panel replaced by a reconfigurable digital display.

The International MV Series continues its use of Cummins diesel engines, with the Cummins B6.7 and L9 offered, depending on configuration.

In 2021, the MV Series was updated with a redesigned hood and bumper.

Current variants

The International DuraStar shares its cab design with several International product lines, including: the TerraStar Class 5 medium-duty truck to compete against the Ford F-550 (P473) and 2009-2016 (Dodge) Ram 5500, the 7000/WorkStar severe-service trucks (renamed the International HV) to compete against the Volvo VHD, Freightliner 108SD/114SD, Sterling L-Line, Kenworth T800, Kenworth T880, Mack Granite, and Western Star 4700, the 8000/TranStar regional-haul semitractor (renamed the International RH), the ProStar aerodynamic long-haul semi-tractor (renamed the International LT) to compete against the Freightliner Cascadia, Kenworth T2000, Kenworth T680, Peterbilt 387, Peterbilt 579, Mack Anthem, Sterling A-Line, Western Star 4900 SA, and the Volvo VNR, and the LoneStar semitractor.

Truck

4100

The 4100 model (after-International Harvester Auto Wagon, International F-Truck, International Model S, International Six Speed, International Harvester A-3, International Harvester B-3, International Harvester C-30 Truck, International Harvester CS-30 Truck, International Harvester DS-30 Truck, International Harvester K-5, International Harvester KB-5, International Harvester L-150, International Harvester R-150, International Harvester Loadstar (1962-1971), International Harvester Loadstar with tilting hood (1972-1978), International Harvester S-Series 1500 (1978–1989), and International 4000 Series LP (1989–2002))/(after-International Harvester Auto Wagon, International F-Truck, International Model S, International Six Speed, International Harvester A-3, International Harvester B-3, International Harvester C-30 Truck, International CS-30 Truck, International Harvester DS-30 Truck, International Harvester K-5, International Harvester KB-5, International Harvester L-150, International Harvester R-150, International Harvester S-150, International Harvester A-150, International Harvester B-150, International Harvester Loadstar 1500 (1962-1971), International Harvester Loadstar 1500 with tilting hood (1972-1978), International Harvester S-Series 1500 (1978–1989), and International 4000 Series LP (1989–2002))/(after-International Harvester Auto Wagon, International F-Truck, International Model S, International Six Speed, International Harvester A-3, International Harvester B-3, International Harvester C-300 Truck, International Harvester CS-300 Truck, International Harvester DS-300 Truck, International Harvester KS-5 COE, International Harvester KBS-5 COE, International Harvester L-150 COE, International Harvester R-150 COE, International Harvester S-150 COE, International Harvester AC-150, International Harvester BC-150, International Harvester Loadstar 1500 (1962-1971), International Harvester Loadstar 1500 with tilting hood (1972-1978), International Harvester S-Series 1500 (1978–1989), and International 4000 Series LP (1989–2002)) 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.

4200

The 4200 model (after-International Harvester Auto Wagon, International F-Truck, International Model S, International Six Speed, International Harvester A-3, International Harvester B-3, International C-30 Truck, International CS-30 Truck, International Harvester DS-30 Truck, International Harvester K-6 Modified as 1941 Dodge W-Series, International Harvester KB-6 Modified as 1941 Dodge W-Series, International Harvester L-160, International Harvester R-160, International Harvester Loadstar 1600 (1962-1971), International Harvester Loadstar 1600 with tilting hood (1972-1978), International Harvester S-Series Medium-Duty (1978–1989), and International 4000 Series (1989–2002))/(after-International Harvester Auto Wagon, International F-Truck, International Model S, International Six Speed, International Harvester A-3, International Harvester B-3, International Harvester C-30 Truck, International CS-30 Truck, International Harvester DS-30 Truck, International Harvester K-6, International Harvester KB-6, International Harvester L-160, International Harvester R-160, International Harvester S-160, International Harvester A-160, International Harvester B-160, International Harvester Loadstar 1600 (1962-1971), International Harvester Loadstar 1600 with tilting hood (1972-1978), International Harvester S-Series 1600 (1978–1989), and International 4000 Series (1989–2002))/(after-International Harvester Auto Wagon, International F-Truck, International Model S, International Six Speed, International Harvester A-3, International Harvester B-3, International Harvester C-300 Truck, International Harvester CS-300 Truck, International Harvester DS-300 Truck, International Harvester KS-6 COE, International Harvester KBS-6 COE, International Harvester L-160 COE, International Harvester R-160 COE, International Harvester S-160 COE, International Harvester AC-160, International Harvester BC-160, International Harvester Loadstar 1600 (1962-1971), International Harvester Loadstar 1600 with tilting hood (1972-1978), International Harvester S-Series Medium-Duty (1978–1989), and International 4000 Series (1989–2002)) 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.

4300

The 4300 model (after-International Harvester Auto Wagon, International F-Truck, International Model S, International Six Speed, International Harvester A-3, International Harvester B-3, International C-30 Truck, International CS-30 Truck, International Harvester DS-30 Truck, International Harvester K-7 Modified as 1941 Dodge W-Series, International Harvester KB-7 Modified as 1941 Dodge W-Series, International Harvester L-170, International Harvester R-170, International Harvester Loadstar 1700 (1962-1971), International Harvester Loadstar 1700 with tilting hood (1972-1978), International Harvester S-Series Medium-Duty (1978–1989), and International 4000 Series (1989–2002))/(after-International Harvester Auto Wagon, International F-Truck, International Model S, International Six Speed, International Harvester A-3, International Harvester B-3, International C-30 Truck, International CS-30 Truck, International Harvester DS-30 Truck, International Harvester K-7, International Harvester KB-7, International Harvester L-170, International Harvester R-170, International Harvester S-170, International Harvester A-170, International Harvester B-170, International Harvester Loadstar 1700 (1962-1971), International Harvester Loadstar 1700 (1972-1978), International Harvester S-Series 1700 (1978–1989), and International 4000 Series (1989–2002))/(after-International Harvester Auto Wagon, International F-Truck, International Model S, International Six Speed, International Harvester A-3, International Harvester B-3, International Harvester C-300 Truck, International Harvester CS-300 Truck, International Harvester DS-300 Truck, International Harvester K-7 COE, International Harvester KB-7 COE, International Harvester L-170 COE, International Harvester R-170 COE, International Harvester S-170 COE, International Harvester AC-170, International Harvester BC-170, International Harvester Loadstar 1700 (1962-1971), International Harvester Loadstar 1700 with tilting hood (1972-1978), International Harvester S-Series 1700 (1978–1989), and International 4000 Series (1989–2002)) 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.

4400

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.

The 4400 is also available as a tractor.

Sub-variants

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:

4300LP

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

4400LP

• Front- 8,000 - 19,000 lb (8,600 kg).
• Rear- 13,500 - 19,000 lb (8,600 kg).

Bus

Main article: International 3300

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

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.

3300

• The 3300 is sold as a cowled chassis, intended primarily for conventional-type (Type C) school buses. Available with Maxxforce7 and MaxxforceDT engines.