Heavy Leading Company Limited is one of the most reliable manufacturers and suppliers of heavy-duty tractor truck in China. If you're going to wholesale bulk durable heavy-duty tractor truck made in China, welcome to get quotation from our factory. All customized products are with high quality and low price.
Product Introduction
This brand‑new Howo 6x4 heavy-duty tractor truck is built for long‑haul logistics, heavy cargo transportation, mining transfer and oversize freight missions. Manufactured under Sinotruk's mature heavy‑vehicle platform, the unit adopts a robust high‑strength frame, reliable powertrain assembly and reinforced off‑road tires. It delivers stable pulling performance even under full‑load and poor‑road conditions. Designed for global bulk buyers, this tractor truck balances durable construction, low operational expenditure and flexible modification potential, making it a cost‑effective core asset for fleets, transport contractors and engineering groups across overseas markets. Every component is factory‑assembled and inspected before delivery, ensuring the vehicle can serve consistent heavy‑duty transport work for years.
Technical Parameters
| Item | Specification |
|---|---|
| Vehicle Model | HOWO 6×4 Tractor Head |
| Drive Form | 6x4, three‑axle rear‑wheel drive |
| Rated Power | 371 HP Diesel Engine |
| Engine Brand | Sinotruk Original Euro 2 Water‑Cooled Diesel Motor |
| Transmission Type | Manual Mechanical Transmission |
| Cab Type | Short Flat Roof Single Sleeper Cab |
| Color | Customizable Pure White (Default) |
| Tire Spec | Heavy‑duty Block Pattern Off‑road Tires |
| Suspension | Heavy‑duty Multi‑leaf Spring Suspension |
| Air Storage System | Multi‑unit Air Tank Assembly |
| Frame | High‑strength Welded Steel Chassis |
| Max Towing Load | Suitable for Full‑loaded Semi‑trailer Combination |
| Application Scenarios | Container haulage, bulk cargo, construction transport, heavy equipment towing |
Core Product Advantages
Powerful and Durable Powertrain
The original Sinotruk 371hp engine offers steady torque output under heavy‑load status. It supports continuous long‑distance driving with lower failure rates, reducing downtime for transport fleets.
Super‑strong Load‑bearing Structure
Thickened steel frame and reinforced leaf spring suspension resist deformation under frequent full‑load operation. The 6x4 layout provides enough traction on muddy, gravel and rugged construction sites.
Cost‑saving Operation Performance
Matched with mature fuel‑saving calibration, the vehicle controls daily fuel consumption at a reasonable level. Spare parts are widely available globally with affordable prices to cut fleet running costs.
Human‑oriented Practical Cab
The cab reserves basic comfortable configurations for long‑shift drivers. Simple control layout reduces operation difficulty, and the sealed interior blocks engine noise effectively during highway cruising.
Independent Feature Analysis for Key Components

Engine Assembly
The turquoise painted original diesel power unit adopts industrial‑grade sealing technology. The integrated pipeline layout prevents oil leakage and dust erosion. The engine maintains stable power output under frequent start‑stop and climbing working conditions, which is a critical guarantee for a reliable heavy-duty tractor truck.
Driver Cab
The cab keeps the classic Howo interior layout. Suspension seat with protective plastic film reduces driving fatigue on long journeys. Large‑area front windshield delivers wide vision, and independent door storage spaces improve driving practicability for cross‑border drivers.


Chassis and Air Circuit System
The thickened punching beam improves chassis torsion resistance. Three combined air tanks ensure stable brake pressure for heavy‑weight trailers. The modular electrical and air piping design simplifies later maintenance inspection.
Reinforced Tire and Wheel Hub
Deep block‑pattern tires enhance skid resistance on wet and unpaved roads. Thick wheel hubs bear repeated heavy impact during mining and construction transport tasks.

Our Company Strength

why choose our products
We are a professional commercial vehicle exporter focusing on new and refurbished heavy trucks, special engineering vehicles and construction machinery. We maintain stable factory supply chains with Sinotruk, Sany and other mainstream brands. Our warehouse stores complete ready‑stock units for fast container loading. We provide one‑stop services including vehicle inspection, container loading, custom painting and documentation for international customs clearance. Our sales team has rich experience serving bulk overseas purchasers from Africa, the Middle East and Southeast Asia.
After‑sales Service
Supply original factory spare parts with global delivery arrangements.
Offer detailed operation manuals and maintenance guidance in English.
Arrange remote technical support for daily breakdown troubleshooting.
Support regular maintenance scheme suggestions for long‑term fleet clients.
FAQ
Q: Can I customize the cab color and have a logo painted on the heavy-duty tractor truck?
A: Custom body colors and company logo printing are acceptable before shipment.
Q: What emission standard does the 371hp engine comply with?
A: This model is Euro 2 standard, suitable for most developing countries' import regulations.
Q: How long is the production and delivery cycle?
A: For ready‑stock trucks, loading can be finished within 7‑10 working days after deposit confirmation.
Q: Do you provide after‑sales technical training for our mechanics?
A: We can send English maintenance documents and arrange online video guidance for your repair team.
Q: What payment terms do you support for bulk purchase?
A: We accept T/T payment, L/C at sight for large‑volume fleet orders after negotiation.
Q: What export documents will you provide for customs clearance?
A: We supply a complete set of export papers, including commercial invoice, packing list, bill of lading, certificate of origin and factory conformity certificate. We can also apply for COC, BV or SGS inspection files as your local customs requires.
Q: How do you protect the truck during sea transportation?
A: We carry out anti‑rust treatment for exposed metal parts, fix all loose components tightly, and adopt bulk carrier or container loading method to avoid scratch and corrosion on the long ocean voyage.
Q: Can I upgrade configurations such as larger fuel tanks or luxury sleeper cabs?
A: Optional upgrades are available. You can choose extended fuel tanks, upgraded seats, air conditioners and other accessories before production to meet your local transport habits.
Q: Is the spare‑part supply stable for this model in my country?
A: Howo 371 series shares universal spare‑part resources globally. Wearing parts and core components are easy to purchase in most African, Middle Eastern and Southeast Asian markets. We can also deliver spare parts separately.
Q: Can we arrange third‑party inspection before loading?
A: Yes. We support on‑site inspection by your appointed surveyor at our yard. You can check vehicle appearance, engine status and overall functions before final payment.
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