HW20712C 12-Speed Transmission Assembly
Time : Jun 08, 2026

Product Overview

The HW20712C 12-Speed Transmission Assembly is a high-performance heavy-duty gearbox specially engineered for SINOTRUK HOWO commercial trucks operating in demanding transportation conditions. Designed with advanced gear transmission technology and reinforced internal structures, the HW20712C delivers stable power output, excellent shifting performance, and superior durability.

This 12-speed manual transmission is suitable for heavy-load logistics transportation, mining operations, construction projects, and long-distance freight applications. Its optimized gear ratio distribution improves climbing capability, driving comfort, and fuel efficiency while reducing transmission wear during continuous operation.

Manufactured with precision-machined gears and high-strength housing materials, the HW20712C transmission ensures reliable operation under high torque and extreme working environments.

Key Specifications

ItemSpecification
Product NameHW20712C Transmission Assembly
Transmission TypeManual Transmission
BrandSINOTRUK / HOWO
ModelHW20712C
Forward Gears12 Forward Gears
Reverse Gears2 Reverse Gears
Maximum Input Torque2700Nm
Maximum Input Speed2600rpm
Gearbox StructureMain & Auxiliary Gearbox
SynchronizerDouble Cone Synchronizer
Lubrication MethodSplash + Forced Lubrication
PTO CompatibilitySupported
Housing MaterialHigh-Strength Cast Iron
Cooling SystemOptional Oil Cooling
ApplicationTractor Trucks, Dump Trucks, Heavy Duty Trucks
Vehicle CompatibilitySINOTRUK HOWO Series
OEM & ODM ServiceAvailable
Warranty12 Months

OE Number / Manufacturer Part Number: HW20712C | HW20712C-A | HW20712C-PTO | AZ2203100005 | AZ2203100008

Gear Ratios

GearRatio
1st Gear15.01
2nd Gear11.73
3rd Gear9.16
4th Gear7.15
5th Gear5.58
6th Gear4.36
7th Gear3.40
8th Gear2.65
9th Gear2.07
10th Gear1.62
11th Gear1.26
12th Gear1.00
Reverse Gear13.80 / 3.45

Product Features

High Torque Capacity

The HW20712C gearbox supports up to 2700Nm input torque, making it suitable for heavy-duty transport and demanding commercial vehicle applications.

Smooth Gear Engagement

Advanced synchronizer technology improves shifting comfort and reduces gear engagement resistance during operation.

Heavy-Duty Durability

The reinforced gearbox housing and precision gear machining provide excellent structural strength and long-term operational reliability.

Optimized Gear Ratios

The 12-speed configuration improves climbing ability, fuel efficiency, and driving performance under varying road conditions.

Wide Vehicle Compatibility

Compatible with HOWO tractor trucks, dump trucks, cargo trucks, and engineering vehicles used in logistics and construction industries.


Applications

  • HOWO Tractor Trucks
  • Heavy Duty Cargo Trucks
  • Dump Trucks
  • Mining Vehicles
  • Construction Vehicles
  • Long-Distance Freight Transportation
  • Commercial Logistics Fleets

Why Choose HW20712C Transmission Assembly?

The HW20712C transmission assembly is designed to meet the demanding requirements of modern heavy-duty transportation industries. Its high torque capacity, stable transmission performance, and durable construction make it an ideal gearbox solution for commercial truck operators worldwide.

Compared with traditional truck transmissions, the HW20712C offers smoother shifting, improved fuel economy, and enhanced reliability under continuous heavy-load operation.

Key advantages include:

  • High torque capacity for demanding applications
  • Stable and smooth gear shifting performance
  • Long service life with reduced maintenance costs
  • Excellent durability under harsh road conditions
  • Reliable power transmission for long-distance transport
  • Suitable for multiple HOWO heavy truck models

Packaging & Shipping

The HW20712C transmission assembly is securely packaged to ensure safe international transportation and export delivery.

  • Standard Export Wooden Packaging
  • Bulk Order Support
  • Worldwide Shipping Available
  • Fast Delivery & Stable Supply Capacity

FAQ

Q1: What vehicles are compatible with the HW20712C gearbox?

The transmission is suitable for SINOTRUK HOWO tractor trucks, dump trucks, and heavy-duty commercial vehicles.

Q2: Does the transmission support PTO installation?

Yes. PTO compatibility is supported for multiple commercial and engineering applications.

Q3: What is the maximum torque capacity?

The HW20712C transmission supports up to 2700Nm maximum input torque.

Q4: Is OEM customization available?

Yes. OEM and ODM services are available according to customer requirements.