Best-Selling, High-Efficiency SINOTRUK HOWO Heavy-Duty 6x4 Tractor Truck — Used & New Models (Tractor Head)

Best-Selling, High-Efficiency SINOTRUK HOWO Heavy-Duty 6x4 Tractor Truck (New & Used Options Available)

Powered by SINOTRUK’s independently developed MC-series diesel engines or Weichai’s WP-series engines, the powertrain features displacements ranging from 9.5L to 13L and a maximum output of up to 620 horsepower. These engines deliver robust torque output across a wide, fuel-efficient RPM range, ensuring stable power delivery even under full-load conditions. The engines are paired with 12- to 16-speed manual or automated manual transmissions (AMT), offering significantly smoother shifting performance. This system is complemented by MAN-technology single-reduction drive axles, featuring gear ratios optimized to balance superior hill-climbing capability with fuel efficiency during high-speed cruising. With a rear axle load capacity of up to 18 tons, the vehicle effortlessly handles gross combined weights (GCW) of up to 40 tons.

**Chassis and Suspension System**

The vehicle utilizes a high-strength frame structure combined with front and rear leaf springs—or air suspension on high-spec models—to effectively dissipate road shocks. The rear axle is equipped with X-shaped thrust rods (on air-suspension models) or V-shaped thrust rods (on leaf-spring models) to prevent axle displacement and enhance driving stability. The vehicle rides on 12R22.5 low-rolling-resistance tubeless tires mounted on aluminum alloy rims, balancing excellent wear resistance with lightweight design requirements.

**Cab and Comfort Features**

The cab features a four-point full-floating suspension system, while the driver's seat is an ISRI NTS870 air-suspension seat, offering multi-directional adjustment, ventilation, heating, and lumbar support functions. The center console is ergonomically angled toward the driver, integrating an LCD instrument cluster, a multimedia infotainment system, and electronic push-button gear selectors to significantly enhance operational convenience. The high-roof "half-row" cab configuration provides a spacious rest area, featuring a sleeper berth measuring 1.2 meters in width. The lower bunk area is equipped with an onboard refrigerator and power inverter to meet the daily living needs of long-haul drivers.

**Safety and Intelligent Features**

Standard safety equipment includes an ABS anti-lock braking system, an EVB (Exhaust Valve Brake) system for enhanced auxiliary braking, and an intake air electric heater for cold starts, thereby improving braking safety and low-temperature adaptability. High-end variants offer an optional Level 4 autonomous driving assistance system, integrating LiDAR, millimeter-wave radar, and cameras to enable autonomous operation and obstacle response in complex conditions—such as at night or during rain and snow. Furthermore, the vehicle is equipped with the Sinotruk "Intelligent Connect" system, which supports remote fault diagnostics and fleet management capabilities.

This Sinotruk HOWO model is widely deployed in heavy-duty sectors, including coal transport, construction material logistics, and port container transshipment. Its reliable powertrain matching, high load-bearing capacity, and low-failure-rate design significantly reduce total lifecycle operating costs, making it an ideal choice for users prioritizing high transport efficiency and cost control.