Isuzu NPS 75-45/155 4×4 AMT Crew Cab

The Isuzu NPS 75-45/155 is a unique and highly capable medium-duty truck, distinguished by its 4×4 drivetrain, making it an exceptional choice for applications requiring off-road capability and enhanced traction. As part of Isuzu’s renowned N-Series, it inherits the brand’s reputation for reliability and durability. This article provides an in-depth look at the NPS 75-45/155 4×4, drawing information directly from the Isuzu Australia spec sheet (dated 2311R).

Key Features:

The spec sheet highlights these key features:

  • 7,500kg GVM / 11,000kg GCM: These figures define the Gross Vehicle Mass (GVM) and Gross Combination Mass (GCM), indicating the truck’s substantial load-carrying and towing capacity, even in challenging environments.
  • 114kW @ 2,600rpm / 419Nm @ 1,600 – 2,600rpm: These are the power and torque outputs of the Isuzu 4JJ1-TCS engine, demonstrating a good balance of performance and efficiency for both on and off-road use.
  • 6-Speed Manual Transmission: Specifically equipped with a robust 6-speed manual transmission, essential for providing the driver with maximum control in varied terrain.
  • Part-Time 4×4 with High/Low Range: The inclusion of a part-time 4×4 system with both high and low range gearing significantly enhances off-road capability and traction in demanding situations.
  • 4,175mm Wheelbase: This wheelbase is engineered to provide a balance between stability on uneven surfaces and maneuverability in tighter off-road conditions.
  • Comprehensive Safety Package: A suite of safety features including ABS, ASR, IESC, AEB, FCW, LDW, DWS, and HSA.
  • Driver & Passenger SRS Airbags: Standard airbags for enhanced occupant safety.
  • 6.2″ or 10.1″ Multimedia System with Apple CarPlay / Android Auto: Modern connectivity and infotainment options for driver convenience.
  • 3 Years / 150,000km / 3,000 Hours Warranty: Isuzu’s warranty, tailored for the expected usage of a 4×4 vehicle.

Engine and Performance:

The Isuzu NPS 75-45/155 4×4 is powered by the Isuzu 4JJ1-TCS engine. This is a 2,999cc, 4-cylinder, 16-valve, turbocharged and intercooled diesel engine. It delivers:

  • Maximum Power: 114 kW (155 PS) at 2,600 rpm
  • Maximum Torque: 419 Nm (309 lb-ft) at 1,600 – 2,600 rpm

While the power output is slightly different from the NPR 75-190, this engine is known for its reliability and efficiency, providing ample torque for off-road driving and load-hauling. The engine incorporates:

  • Variable Nozzle Turbocharger
  • Direct Injection High Pressure Common Rail
  • Cooled EGR with Exhaust Diesel Particulate Diffuser (DPD)

These technologies ensure good performance and compliance with ADR 80/03 (Euro V) emission standards.

Transmission and Drivetrain:

A key differentiator of the NPS 75-45/155 is its 6-speed manual transmission (Isuzu MZW-6S), specifically chosen for its robustness and the direct control it offers in off-road situations.

The part-time 4×4 system is another crucial feature. This allows the driver to engage four-wheel drive when needed for increased traction on loose, slippery, or uneven surfaces. The system includes both high and low range gearing. Low range provides significantly increased torque multiplication at the wheels, essential for tackling steep inclines, navigating obstacles, and controlled maneuvering at low speeds in challenging terrain.

Dimensions and Weights:

Key dimensions and weight ratings define the truck’s off-road capability and carrying capacity:

  • Wheelbase: 4,175 mm
  • GVM (Gross Vehicle Mass): 7,500 kg. This is the maximum permissible total weight of the truck and its load.
  • GCM (Gross Combination Mass): 11,000 kg. This is the maximum permissible total weight of the truck and a trailer.

The longer wheelbase contributes to stability, particularly important when traversing uneven ground.

Cabin and Interior:

The Isuzu NPS 75-45/155 4×4 is designed with a focus on functionality and driver comfort, even in demanding environments. Features include:

  • Seating: Typically a single cab configuration, designed for driver and passenger comfort.
  • Comfort: Air conditioning and heating are standard, essential for operator comfort in varying climates.
  • Instrumentation: A clear and informative instrument panel provides essential vehicle information, including 4×4 mode indicators.
  • Multimedia:
    • 6.2″ or 10.1″ LCD capacitive touchscreen
    • AM/FM/DAB+ radio
    • Apple CarPlay and Android Auto compatibility
    • Bluetooth connectivity
    • USB and auxiliary input

These modern features provide connectivity and entertainment for the driver, even in remote locations.

Safety Systems:

The Isuzu NPS 75-45/155 4×4 is equipped with a comprehensive suite of safety features:

  • Active Safety:
    • ABS (Anti-lock Braking System): Maintains steering control during hard braking, even on loose surfaces.
    • ASR (Anti-Skid Regulator): Improves traction by limiting wheel spin, crucial in off-road conditions.
    • IESC (Isuzu Electronic Stability Control): Helps maintain vehicle stability on challenging terrain.
    • AEB (Advanced Emergency Braking): Automatically applies the brakes to avoid or mitigate collisions.
    • FCW (Forward Collision Warning): Alerts the driver to potential frontal collisions.
    • LDW (Lane Departure Warning): Warns the driver if the truck drifts out of its lane.
    • DWS (Distance Warning System): Warns the driver if they are too close to the vehicle ahead.
    • HSA (Hill Start Aid): Assists with starting on inclines, particularly useful in hilly or off-road environments.
  • Passive Safety:
    • Driver and Passenger SRS Airbags

These safety systems are crucial for operating in potentially hazardous on and off-road conditions.

Applications:

The Isuzu NPS 75-45/155 4×4 is specifically designed for applications requiring robust off-road capability, including:

  • Emergency Services: Firefighting, rescue operations in challenging terrain.
  • Utilities: Accessing remote infrastructure for maintenance and repairs.
  • Mining and Construction: Transporting personnel and equipment to difficult-to-reach sites.
  • Forestry and Agriculture: Operating in demanding off-road environments.
  • Adventure and Tourism: Providing transportation in remote areas.

Its 4×4 drivetrain with high/low range makes it exceptionally well-suited for tackling steep inclines, rough tracks, and slippery surfaces.

Warranty:

Isuzu Australia provides a warranty for the NPS 75-45/155 4×4:

  • 3 Years / 150,000 km / 3,000 Hours

The lower kilometer and hour limits compared to on-road models reflect the potentially more demanding usage associated with a 4×4 vehicle.

Conclusion:

The Isuzu NPS 75-45/155 4×4 stands out as a highly capable and specialized medium-duty truck. Its robust 4×4 drivetrain with high/low range gearing, combined with a reliable engine and a comprehensive suite of safety and comfort features, makes it an ideal choice for businesses and organizations that require exceptional off-road performance and the ability to transport loads and personnel to challenging locations. Its unique capabilities within the N-Series make it a valuable asset for a wide range of demanding applications.