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Front Three-Quarter View
Overview & Specifications
Refurbished vehicle overview
A Used Tractor Should Be Easy to Verify
This page is for the Refurbished HOWO NX 371HP 6x4 Tractor Truck, based on the representative ZZ4257V344JB / ZZ4257V344JB1 chassis family. Each available vehicle must be verified by its VIN/chassis number, engine number, production year, mileage, fifth-wheel specification, current condition and restoration scope before contract.
Request a current walk-around and cold-start video, chassis-rail and fifth-wheel close-ups, air/electrical connector checks, restoration records and a live or third-party inspection before payment.
Request Current Stock & VIN VideoConditionRefurbished / Used
Drive6×4 · 3 axles
EngineWD615.47 · 371 HP
TransmissionHW19710 manual
Reference chassisZZ4257V344JB family
Reference cabHOWO NX H77L
InspectionVIN-based confirmation
AvailabilitySubject to current stock
Current vehicle photosCold-start videoFifth-wheel inspectionLive or third-party inspectionExport loading support
Specification last reviewed: August 2026 · Reference data must be matched to the actual VIN and intended trailer before contract.
Reference specification
Refurbished HOWO NX 371HP 6x4 Tractor Truck: Full Parameter Table
Important: These are reference parameters for a representative Refurbished HOWO NX 371HP 6x4 Tractor Truck configuration. A refurbished truck may differ in year, wheelbase, cab, fifth-wheel size and height, fuel tank, tire type, axle ratio, emissions equipment and optional parts. The final specification must be issued against the actual VIN and matched to the intended trailer.
| System | Reference specification |
|---|---|
| Vehicle model | Refurbished HOWO NX 371HP 6x4 Tractor Truck, representative chassis family ZZ4257V344JB / ZZ4257V344JB1 |
| Drive / axle layout | 6×4; 3 axles; 10 wheels plus 1 spare tire |
| Driving position | Left-hand drive reference; confirm destination requirement and actual vehicle |
| Cab | HOWO NX H77L single-sleeper cab reference; air conditioner and driver’s air seat. H78L / H78B variants may appear in stock. |
| Engine | SINOTRUK WD615.47, diesel, inline 6-cylinder, water-cooled, turbocharged and intercooled |
| Rated power | 371 HP / 273 kW at 2,200 rpm |
| Displacement | 9.726 L |
| Maximum torque | Common reference: 1,500 Nm at 1,100–1,600 rpm; confirm engine plate and VIN specification |
| Emission reference | Euro II; confirm local import and registration eligibility before purchase |
| Clutch | 430 mm single-plate dry diaphragm-spring clutch, hydraulic control with air assistance |
| Transmission | HW19710 manual gearbox, 10 forward + 2 reverse gears |
| Steering | ZF8098 hydraulic power steering reference |
| Front axle | 7,000 kg steering axle reference; disc or drum brake configuration varies by market and VIN |
| Rear axles | 13,000 kg × 2 single-reduction drive-axle reference; axle ratio and brake configuration vary by vehicle and duty |
| Differential locks | Inter-wheel and inter-axle lock reference; verify operation on the actual truck |
| Suspension | NX leaf-spring reference: front 3-leaf and rear 5-leaf/bogie arrangement; confirm the actual vehicle |
| Braking | Dual-circuit compressed-air service brake; spring-energy parking brake; engine exhaust brake |
| Electrical system | 24 V; 2 × 12 V / 165 Ah batteries reference |
| Fuel tank | 600 L common NX reference; capacity and material vary by stock unit |
| Tires | 12.00R20, 12R22.5 or 315/80R22.5 may appear; 10 tires plus 1 spare reference |
| Wheelbase | 3,400 mm published in one NX 371 configuration; 3,200 + 1,400 mm appears in other NX-market specifications. Measure the actual truck. |
| Frame | Reinforced U-profile ladder frame; rail section and repair history must be confirmed by inspection |
| Fifth wheel | 2-inch or 3.5-inch coupling may be fitted; verify kingpin compatibility, mounting height, wear and locking operation |
| Curb weight | Approx. 9,210 kg reference, dependent on cab, tanks, tires and fitted equipment |
| Permissible combination mass | Depends on the vehicle plate, fifth-wheel and axle ratings, trailer, route and destination regulation; do not select by advertised tonnage alone |
| Maximum speed | Common published reference: approximately 90–102 km/h, dependent on axle ratio and specification |
| Overall dimensions | Approx. 6,985 × 2,496 × 3,850 mm for one H77L NX published configuration; actual tractor must be measured. |
Cross-checked against public Refurbished HOWO NX 371HP 6x4 Tractor Truck specifications for the ZZ4257V344JB family / WD615.47 / HW19710 combination. All used-vehicle data and trailer compatibility must be confirmed from the physical truck, its documents and the intended operating jurisdiction.
Vehicle presentation
TRACTOR TRUCK GALLERY
Front Side View
Full Side Profile
Fifth Wheel & Rear Axles
CORE SYSTEMS
Core systems
Six Core Systems to Inspect
Use this 2×3 layout to show the actual condition of the exact tractor. Current vehicle-specific photos should replace all reference visuals before the unit is presented as available stock.
Engine
Cold start, exhaust, leakage points, engine number and maintenance condition.
Cab
Cab structure, dashboard, sleeper, seats, air conditioning, lights and electrical functions.
Frame
Frame rails, cross-members, fifth-wheel mounting area, corrosion treatment and repair condition.
Axles & Suspension
Hubs, differentials, spring packs, bushings, alignment and signs of oil leakage.
Fifth Wheel
Plate wear, jaws, locking handle, kingpin size, mounting bolts, height and grease condition.
Air & Electrical Lines
Couplings, hoses, sockets, mounting, leakage check and compatibility with the intended trailer.
RESTORATION & VERIFICATION
Restoration process
01 / INTAKEVIN & Condition CheckRecord VIN, engine and chassis numbers; photograph the tractor before restoration; assess cab, frame rails, axles, powertrain, fifth wheel and connectors.
02 / RESTOREMechanical RepairShow engine, gearbox, axle, brake, steering and suspension checks; identify every replaced part in the vehicle job record.
03 / REFRESHChassis & Cab ReconditioningShow frame and coupling treatment, rust repair, cab refurbishment, air/electrical work, paint preparation and final finish.
04 / TESTFinal InspectionShow cold start, idle, gear selection, brake response, fifth-wheel locking, trailer-line condition, lighting and road-test / yard-test evidence.
Show the Work, Not Just the Finished Paint
A credible refurbished-tractor page should document what was inspected, repaired and replaced. The blocks below are ready for your real workshop photos, videos and inspection records.
Verification materials
VEHICLE IDENTITY
RESTORATION RECORD
COUPLING CHECK
FUNCTION CHECK
BUYER CONTROL
EXPORT READINESS
Evidence Customers Can Review Before Payment
VIN & Component Record
Provide clear photos of the VIN/chassis plate, engine number, odometer and major assemblies; match these to the proforma invoice.
Before / During / After
Give date-stamped workshop photos and a parts/work list. State what was repaired, renewed or retained.
Fifth Wheel & Trailer Lines
Show fifth-wheel plate wear, jaws, lock test, mounting, height, grease condition and air/electrical connector condition.
Video Inspection
Share cold start, exhaust, dashboard, gear engagement, differential-lock check and walk-around video of the exact tractor.
Live or Third-Party Inspection
Offer a live video call or facilitate an independent inspection arranged by the buyer before balance payment.
Loading & Document Pack
Confirm the loading method, vehicle photos at dispatch, packing list, bill-of-lading details and export documents.
Workshop evidence
Refurbishment Workshop
Follow one tractor through intake, repair and final testing with a consistent stock number or VIN reference.
01. Refurbishment Workshop
Use one vehicle or stock number across all three photos so buyers can follow the restoration journey.
Before Restoration
Show the tractor on arrival, including its stock number, cab, frame rails, fifth wheel, engine bay and existing condition.
During Restoration
Show actual mechanical work such as engine service, brake repairs, chassis checks or fifth-wheel maintenance.
Finished Vehicle
Show the completed tractor, final paint, cold start, coupling lock check and a short walk-around video link.
If you are interested in our company or products, welcome to visit our company you can also get contact with us through online consulting,
E-mail: info@simamix.com and Telephones:+86 18538068019.
FACTORY, SHIPPING & FAQ
Factory, inspection & shipping evidence
Verified Evidence Builds Trust
Use genuine, dated materials only. Confirm the exact tractor by stock number or VIN before purchase and dispatch.
02. Customer Factory Visit
Publish visitor photos only with customer consent. The purpose is to show a real inspection process, not staged publicity.
Arrival & Tour
Show the visiting team entering the workshop or reviewing the available tractor-truck inventory.
Vehicle Inspection
Show the buyer checking the actual tractor, documents, fifth wheel, connectors and restoration details.
Test & Confirmation
Show a cold start, brake and gear test, coupling inspection or signed handover moment where appropriate.
03. Dispatch & Shipping
Connect shipment photos to the exact vehicle by showing the stock number or VIN where practical.
Before Loading
Show the tractor’s final condition, tires, chassis, fifth wheel and key accessories immediately before dispatch.
Loading Process
Show the actual loading route, securing method and vehicle position on the transport arrangement.
Shipment Confirmation
Show the dispatched tractor and reference the packing list, shipping date or bill-of-lading information.
FAQ before purchase
Refurbished HOWO NX 371HP 6x4 Tractor Truck FAQ
Are all Refurbished HOWO NX 371HP 6x4 Tractor Trucks configured exactly the same?
No. Confirm the actual tractor through VIN, current photos, physical measurements and the signed specification.
How do I confirm compatibility with my semi-trailer?
Provide the trailer type, kingpin size, loaded coupling height, intended gross combination weight, axle layout and route conditions. Confirm fifth-wheel size, mounting height, axle ratings and local regulations before contract.
Can I inspect the exact tractor before balance payment?
Request a live video inspection, detailed photos and video, or arrange a third-party inspection.
What should be included in the restoration record?
It should identify the tractor, show before/during/after condition, list repaired or replaced components and include engine, brake, drivetrain, coupling and road-test evidence.
What affects the final price?
Price depends on production year, mileage, mechanical condition, restoration scope, cab type, fifth wheel, tires, fuel tank, optional spare parts, quantity and destination shipping plan.
How long does preparation and delivery take?
Timing depends on current stock, required restoration, inspection, export documents, destination port and vessel schedule.
Which shipping method is available?
Ro-Ro, bulk shipment, containerized options or another suitable method may be discussed according to vehicle dimensions, destination and vessel availability.
Is warranty or spare-parts support included?
Any warranty period, exclusions, spare-parts package and after-sales scope must be written into the quotation or contract for the exact tractor.
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