Name: Sinotruk Howo 371 Truck Tractor
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Sinotruk Howo 371 Truck Tractor

HOWO 371 6×4 Howo tractor truck—engineered for heavy-duty hauling and extreme durability. Equipped with a robust engine, advanced load-bearing chassis, and superior traction on any terrain, this powerhouse ensures maximum productivity with minimal downtime.
The chassis of the Howo tractor truck price adopts a triple plate to reinforce it, which makes the truck has a longer service life. The axles of the howo tractor truck price, front axles are 9 tons and the rear axles are 16 tons.

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Overview

The Sinotruk Howo 371 Truck Tractor is a heavy-duty 6x4 tractor unit from Sinotruk's renowned HOWO series. Based on the ZZ4257N3241W chassis model, this vehicle is specifically designed for medium-to-long-haul logistics and heavy-load transportation applications.

Powered by the proven WD615.47 turbocharged diesel engine, delivering 371 horsepower, and paired with Sinotruk’s self-developed HW series manual transmission, the Howo 371 forms the industry-recognized "Golden Powertrain." Known for its exceptional reliability, high parts commonality, and low total cost of ownership, this model has long maintained a leading position in the heavy-duty tractor market. It is widely exported to Southeast Asia, Africa, the Middle East, and South America, earning its reputation as a "evergreen workhorse" in road transportation.

Key Features

Feature	Description
Proven & Reliable Powertrain	Equipped with the WD615.47 diesel engine, displacement 9.726L, max torque 1460N·m. This mature engine technology offers high durability, long B10 life, widely available spare parts, and extremely low maintenance costs.
High-Capacity Chassis	Features a high-strength frame (300×80×8mm), HF9 front axle, and HC16 double-reduction rear axle (16-ton grade) with selectable gear ratios (e.g., 4.42, 4.8, 5.73). Standard wheel differential locks enhance starting and climbing capabilities under heavy loads.
Excellent Fuel Economy	Combined fuel consumption ranges from 28-35L/100km. Paired with a 400L aluminum fuel tank, the vehicle achieves a cruising range of over 1,000 kilometers, offering significant fuel cost advantages under standard load conditions.
Enhanced Driver Comfort	Equipped with the HW76 semi-high roof cab featuring 4-point air suspension and an air-suspended driver's seat, effectively filtering road vibrations. The spacious cab includes a sleeper berth, power windows, and a VDO instrument cluster, reducing driver fatigue during long-haul trips.
High Commonality & Easy Maintenance	Key components are highly interchangeable with other models on the same platform. The extensive after-sales service network minimizes vehicle downtime and ensures high operational availability.

Specifications with Explanation

Parameter	Specification	Explanation
Model Designation	ZZ4257N3241W	The official chassis model code for this 6x4 tractor, compliant with domestic and most international homologation requirements.
Engine Model	WD615.47	Inline 6-cylinder water-cooled diesel engine, displacement 9.726L, rated power 371HP (approx. 273kW) @ 2200rpm, max torque 1460N·m @ 1100-1600rpm. Features low-speed high torque characteristics, ideal for heavy-load starting and climbing.
Transmission	HW19710 / HW19712	10-speed or 12-speed manual transmission. The main box features a twin-countershaft design for high load capacity. Overdrive (for highway logistics) or direct-drive (for heavy loads) options available.
Drive Axle	HC16 (16-ton grade)	Double-reduction axle (hub reduction) with standard wheel differential lock. This design increases wheel-end torque output and improves ground clearance for better off-road capability. Gear ratios available: 4.42, 4.8, 5.73, etc.
Fifth Wheel	90#	Standard 90mm kingpin fifth wheel coupling with high load capacity, compatible with various semi-trailers.
Tires	12.00R20 or 315/80R22.5	Steel-belted radial tires (12.00R20) offer high wear resistance for rough terrain; tubeless radial tires (315/80R22.5) provide lower rolling resistance for highway use.
Fuel Tank Capacity	400L	Aluminum alloy fuel tank for lightweight construction, ensuring long-range endurance. Larger capacity tanks available upon request.
Cab	HW76 Semi-High Roof	4-point air suspension cab with air-suspended driver's seat. The interior provides ample headroom and a sleeper berth, balancing comfort and practicality.

Applications

Application	Suitability
Long-Haul Logistics	The 6x4 drive configuration provides excellent traction. Paired with a small gear ratio axle (4.42) and tubeless tires, it offers lower fuel consumption for highway freight, less-than-truckload (LTL), and express delivery services.
Port Container Transport	Robust chassis and high tractive effort make it ideal for frequent stop-and-start operations in port areas. Standard differential locks handle slippery or mildly muddy port conditions.
Heavy-Duty Equipment Haulage	With a large gear ratio axle (4.8 or 5.73) and multi-leaf spring suspension, tractive capacity is significantly enhanced, suitable for transporting excavators, bulldozers, and other heavy machinery.
Bulk Cargo Transfer	The 400L fuel tank ensures long range, while the reliable powertrain makes it suitable for medium-to-short-haul transfer of coal, sand, steel, and other bulk materials.

Comparison Table

Configuration	Standard (Logistics Version)	Heavy-Duty (Construction Version)
Engine	WD615.47 (371HP)	WD615.47 (371HP)
Emission Standard	Euro 2 / Euro 3	Euro 2 / Euro 3
Transmission	HW19710 (10-speed, Overdrive)	HW19712 (12-speed, Direct-Drive)
Rear Axle Ratio	4.42 (Highway Ratio)	4.80 or 5.73 (Heavy-Duty Ratio)
Tires	315/80R22.5 (Tubeless)	12.00R20 (Steel-Belted)
Suspension	Parabolic Leaf Springs (Better Comfort)	Multi-Leaf Springs (Higher Load Capacity)
Fuel Tank	400L Aluminum	400L Aluminum (Larger optional)
Recommended Use	Long-haul standard load logistics, express delivery	Short-haul heavy loads, mine/construction site transport, machinery haulage

Buying Guide

1. Select Configuration Based on Operating Conditions

Highway Standard Load Transport: Choose the combination of small rear axle ratio (4.42) + overdrive transmission + tubeless tires. This configuration optimizes fuel economy under 49-ton gross vehicle weight, ideal for long-haul logistics.
Mountain/Construction Site Heavy Load Transport: Choose the combination of large rear axle ratio (4.8 or 5.73) + direct-drive transmission + steel-belted tires + multi-leaf spring suspension. This configuration significantly improves starting torque and climbing capability while enhancing durability in harsh conditions.

2. Cab Selection

For long-haul transport, choose the HW76 semi-high roof cab with sleeper berth to ensure driver rest quality.
For short-haul or yard operations, a flat roof cab is available to reduce overall height and wind resistance for height-restricted areas.

3. Emission Standard Confirmation

The original WD615.47 engine is designed to Euro 2 emission standards. For markets requiring Euro 3 or higher standards, confirm local environmental regulations. An SCR after-treatment system may be available for upgrade.

4. New vs. Used Vehicle Purchasing

This model has high market volume and good resale value. When purchasing used, it is recommended to inspect engine condition, transmission shifting smoothness, rear axle gear clearance, and check the frame for deformation or welding repairs.

Delivery & Certification

Delivery Information

Domestic Delivery: Vehicles are typically ready for pickup within 15-30 business days after order confirmation and full payment. Pickup or logistics delivery to the designated location is available.
Export Delivery: FOB (Qingdao Port/Tianjin Port) or CIF terms are supported. Vehicles are packaged according to marine standards with anti-corrosion and moisture-proof treatment, and complete export documentation is provided.

Certifications

Domestic Certification: CCC (China Compulsory Certification) certified, compliant with national vehicle registration and environmental standards.
International Certification: Certification support available based on destination country requirements, including but not limited to:
- GCC Certification (Gulf Countries)
- SONCAP Certification (Africa)
- EAC Certification (Eurasian Economic Union)
- Other destination market homologation (to be confirmed in advance)

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