12-speed transmissionHW19712/HW23712
1. Main gearbox with dual intermediate shaft mechanism, auxiliary gearbox with planetary mechanism, 6X2, main gearbox with dual intermediate shaft mechanism, auxiliary gearbox with planetary mechanism;
2. Long-distance single H operation, dual lever operation, can be equipped with shift assistant;
3. Combined forced lubrication and gear splash lubrication;
4. Multiple gears, small gear ratio differences, easy shifting, strong fuel economy;
5. Rich options available, can be equipped with rear power take-off, hydraulic retarder, suitable for a wide range of vehicle models;
| Transmission model | Gear | Torque (Nm) | Speed ratio range |
| HW19712 | 12 | 1900 | 15.01-1 |
| HW19712C | 12 | 1900 | 11.8-0.79 |
| HW21712 | 12 | 2100 | 15.01-1 |
| HW21712C | 12 | 2100 | 11.8-0.79 |
| HW23712 | 12 | 2300 | 15.01-1 |
| HW23712C | 12 | 2500 | 11.8-0.79 |


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