ZW Vehicle Group---Semi Trailer,Dump Truck,Tractor Truck,Commercial Truck

HOWO 420HP 6×4 Prime Mover Tractor Truck
Heavy-Duty 6×4 Tractor for Long-Haul and Industrial Transport
HOWO 420HP 6×4 Prime Mover Tractor Truck
The HOWO 420HP 6×4 Prime Mover Tractor Truck offers exceptional power, durability, and driver comfort for international logistics, construction hauling, and industrial operations, supporting high-capacity transport with efficiency and reliability.
Detailed Product Description :
The HOWO 420HP 6×4 Prime Mover Tractor Truck is purpose-built for demanding freight, container, and industrial transport operations. Equipped with the D12.42 diesel engine, it generates 420HP and 1900 N·m of torque, delivering strong low-speed power for heavy payloads. Combined with a 12-speed HW19712 manual transmission, it ensures smooth gear transitions, fuel efficiency, and reliable performance across varied terrains.
Driver comfort and safety are a priority in this model. The European-style high-roof cab includes a wide windshield for maximum visibility, ergonomic seating, and an electrically adjustable, heated rearview mirror. The four-point fully floating cab design significantly reduces vibration, ensuring safer and more comfortable long-haul journeys.
Built for robust performance, the HOWO 420 features a reinforced chassis, heavy-duty front axles (HF7/HF9) and rear axles (ST16/HC16), and a resilient suspension system capable of handling payloads up to 32,800 kg. Optional right-hand drive (RHD) configurations and strong off-road capability expand its versatility for international logistics, construction, and industrial applications.
Overall, the HOWO 420HP 6×4 Prime Mover Tractor Truck combines high performance, durability, and driver-focused features to maximize operational efficiency while minimizing long-term maintenance costs.


Key Advantages:
High-power 420HP D12.42 engine with 1900 N·m torque for heavy-duty hauling.
12-speed HW19712 manual transmission for smooth shifting and fuel efficiency.
Robust HF7/HF9 front and ST16/HC16 rear axles with reinforced suspension.
European-style high-roof cab with four-point floating design and ergonomic controls.
Optional RHD configuration and advanced off-road capabilities.
Supports payloads up to 32,800 kg, ideal for long-haul and industrial transport.
Key Specifications:
Parameter | Specification |
|---|---|
Model | ZZ4257V3247N1 |
Brand | HOWO / Sinotruk |
Drive Type | 6×4 |
Engine Model | D12.42 |
Horsepower | 420HP |
Torque | 1900 N·m |
Transmission | HW19712, 12 forward + 2 reverse |
Emission Standard | Euro II |
Steering | ZF8198 hydraulic, power-assisted |
Front Axle | HF7/HF9 |
Rear Axle | ST16/HC16, I=4.8 / 4.42 / 5.73 |
Curb Weight | 9180–9210 kg |
Gross Vehicle Weight (GVW) | 25,000 kg |
Payload | 29,400–32,800 kg |
Wheelbase | 3225+1350 / 3200+1400 mm |
Overall Dimensions | 6800×2496×2958 / 3718 / 3356 / 3668 mm |
Max Speed | 90–102 km/h |
Tyre Size | 295/80R22.5 / 12R22.5 |
Cabin | European-style, high-roof, four-point floating |
Color | Optional |
Production & Shipping:
ZW Group supplies HOWO 420HP 6×4 Prime Mover Tractor Trucks as new or professionally refurbished units depending on client needs. Refurbishment includes mechanical inspections, engine tuning, transmission checks, chassis reinforcement, and cabin restoration to ensure operational reliability.

Every truck is carefully secured for international delivery using flatbed trucks, Ro-Ro vessels, or modular carriers. Our customized loading and securing methods protect the chassis, drivetrain, and cabin during transit, ensuring damage-free delivery to global clients.
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