HOWO NX 371 6×4 Trailer Head Used Truck Tractor for Sale

The used HOWO NX 371 is a heavy-duty tractor truck made for pulling semi-trailers. Its 6×4 drive system, 371 hp diesel engine, and strong frame suit both regional freight and long-distance transport.

The pictured vehicle has a white H77L cab, three axles, twin rear drive axles, a fifth wheel, air lines, and trailer electrical connections. Moreover, the cab includes two seats, a rear sleeper, and a manual gear lever.

This product is the tractor head. A suitable semi-trailer can be selected separately. Buyers can view our used trailer inventory to compare available transport solutions.

 

371 HP for Heavy Transport

A common HOWO NX 371 setup uses a WD615.47 six-cylinder diesel engine. It provides 371 hp, or 273 kW, at 2,200 rpm. In addition, its maximum torque is about 1,500 N·m between 1,100 and 1,600 rpm.

The 9.726 L engine uses turbocharging, intercooling, and water cooling. Therefore, it can provide strong low-speed pulling power when the truck starts with a loaded trailer or travels on demanding roads.

The reference emissions level is Euro II. However, emissions standards can vary by production year and destination market. Buyers should confirm the engine plate and local import rules before ordering.

 

Manual Gearbox for Controlled Driving

The reference HW19710 manual gearbox has 10 forward gears and two reverse gears. Its wide gear range helps the driver manage starting, climbing, cruising, and low-speed trailer positioning.

A 430 mm dry clutch transfers power from the engine to the transmission. Meanwhile, hydraulic operation with air assistance helps reduce the effort needed to use the clutch.

The gearbox, clutch, propeller shaft, and differential response can be checked during the operating test.

 

6×4 Drive and Tandem Rear Axles

The 6×4 layout has one front steering axle and two powered rear axles. As a result, it provides more traction than a 4×2 tractor on slopes, loose ground, wet roads, and busy construction sites.

A common reference setup includes a 7-ton front axle and two 12-ton rear axles. Differential locks may also help the truck maintain traction when road conditions are difficult.

Furthermore, the steel frame and leaf-spring suspension create a firm base for repeated trailer work. The pictured chassis also shows twin rear tires, rear guards, mud flaps, air tanks, and protected tail lamps.

 

Fifth Wheel and Trailer Compatibility

The fifth wheel connects the tractor to the semi-trailer kingpin. A common HOWO NX 371 configuration uses a 3.5-inch fifth wheel. However, coupling size and height should be checked before matching a trailer.

Air hoses control the trailer braking system, while the electrical cable powers the trailer lights. Therefore, these connections should be tested before delivery.

The truck may be paired with:

• Container skeletal trailers
• Flatbed and side-wall trailers
• Low-bed equipment trailers
• Fuel and liquid tankers
• Bulk powder tankers
• Tipper semi-trailers
• Curtain-side trailers
• Dry cargo box trailers
• Refrigerated trailers

Buyers can also explore related HOWO trailer solutions.

 

Sleeper Cab for Long Routes

The pictured cab has two seats and a sleeper behind them. Therefore, it can support regional deliveries as well as longer freight routes.

Other visible features include a large windshield, wide mirrors, an exterior sun visor, storage areas, cup holders, a manual gear lever, and an adjustable driver’s seat. Air conditioning is also common on the H77L cab.

Before shipment, Longmai Machinery can check the seats, sleeper, doors, windows, mirrors, lights, wipers, horn, air conditioner, gauges, and cab controls.

 

Main Product Features

• Visible HOWO NX 371 model identification
• Heavy-duty 6×4 drive configuration
• Reference 371 hp diesel engine
• Ten-speed manual transmission
• Tandem rear drive axles
• Sleeper cab with two seats
• Fifth wheel for semi-trailer connection
• Compressed-air trailer brake lines
• Strong steel chassis and leaf springs
• Inspection and export support available

 

Reference Technical Specifications

Reference Specification

Item

Brand SINOTRUK HOWO

Model HOWO NX 371

Vehicle type Tractor truck / prime mover

Drive configuration 6×4

Axles Three

Engine model WD615.47 diesel

Engine type Six-cylinder, turbocharged and intercooled

Rated power 371 hp / 273 kW at 2,200 rpm

Maximum torque 1,500 N·m at 1,100–1,600 rpm

Engine displacement 9.726 L

Reference emissions level Euro II

Transmission HW19710 manual

Gears 10 forward / 2 reverse

Clutch 430 mm dry single plate

Front axle VGD71, reference 7,000 kg

Rear axles MCY12BGS, reference 12,000 kg × 2

Braking system Dual-circuit compressed air

Parking brake Spring energy air brake

Auxiliary brake Engine exhaust brake

Fifth wheel Reference 3.5 inches

Tire size 315/80R22.5

Fuel tank Reference 600 L

Cab H77L long cab with one sleeper

Electrical system 24 V

Wheelbase 3,225 + 1,350 mm

Overall dimensions Approx. 6,850 × 2,500 × 3,055 mm

Reference curb weight Approx. 8,800 kg

Reference gross vehicle weight Approx. 26,000 kg

Reference gross combination weight Up to 70,000 kg

These specifications describe a common HOWO NX 371 configuration. The actual engine, gearbox, axle ratio, fuel tank, fifth wheel, tire size, steering position, weight, and emissions level may vary. Therefore, the selected truck’s chassis number and data plate must be checked before purchase.

 

Inspection and Preparation

Longmai Machinery can provide current photos, a cold-start video, and a complete operating test. The inspection may cover:

Engine start, sound, smoke, and leaks

Clutch and gear changes

Steering and brake response

Front and rear axles

Chassis frame and suspension

Fifth-wheel locking system

Trailer air and electrical lines

Fuel tank and air tanks

Tires, rims, and wheel hubs

Cab equipment and air conditioning

In addition, buyers may arrange an independent inspection. Cleaning, fluid checks, minor repairs, paint work, tire matching, and trailer sourcing can also be discussed.

 

Used-Truck Supply and Export Support

Longmai Machinery supplies commercial vehicles to transport companies, machinery dealers, contractors, and fleet buyers. Both single-unit and multi-vehicle orders are available.

Our services include vehicle sourcing, condition checks, operating videos, spare-parts support, export documents, loading plans, and international shipping. Buyers can also compare other

used trucks

and HOWO commercial vehicles.

 

Request a HOWO NX 371 Quote

Please contact Longmai Machinery for the current price, production year, mileage, engine details, condition, and delivery schedule.

For an accurate offer, provide your required quantity, destination port, trailer type, cargo, preferred steering position, emissions standard, and trade terms.

HOWO and SINOTRUK are trademarks of their respective owner. Longmai Machinery is an independent supplier of used commercial vehicles.