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Isuzu Trucks

Isuzu N-Series Class 4 Gas

N-Series Class 4 Gas

Experience unmatched performance and exceptional maneuverability with the Isuzu NPR-HD gasoline-powered truck.

Its innovative low-cab forward design not only offers exceptional forward visibility but also provides ample space for cargo, accommodating bodies ranging from 10–20'. Whether you prefer a standard or crew cab, with room for three to seven passengers, and wheelbases ranging from 109–176", this Class 4, medium-duty truck gives you the freedom to choose.

The Isuzu NPR-HD is built to handle even the most demanding driving conditions, with a GVWR of 14,500 lbs and GCWR of 20,500 lbs. It's designed for improved driver comfort and increased productivity. The robust dual rear-wheel chassis ensures a sturdy platform capable of managing heavier body payloads ranging from 8,247–8,947 lbs. Plus, the enhanced traction of the rear wheels allows for better acceleration, while the front wheels provide responsive steering control. Under the hood, the NPR-HD features a powerful GM 6.6L V8 L8T gasoline engine that meets federal emissions standards through the 2026 model year, delivering an impressive 350 hp and 425 lb/ft of torque. Paired with a standard GM 6L90 6-speed automatic transmission, the NPR-HD powertrain is engineered to deliver optimal performance and fuel efficiency.

Key Highlights

  • Standard cab with seating for up to three
  • Crew cab with seating for up to seven
  • 38.6 gallon in-frame fuel tank
  • 20,500 lbs GCWR truck and trailer weight
  • 8,237 to 8,947 lbs body payload
  • 6-speed automatic transmission
  • 14.3" Front disc and 13.7" rear disc, vacuum/hydraulic with 4-channel ABS braking
  • 6.6L GMPT l8T(Gen V) 8-cyclinder engine with 350 hp at 4,500 rpm and 425 lb/ft at 3,800 rpm
Full Line of N-Series Class 4 Gas Trucks