AZ2203100438+001 Planetary Mechanism Assembly is an original core OEM part for Sinotruk, compatible with the auxiliary gearbox of 12-speed / 16-speed transmissions for Howo, Sitrak and other heavy-duty truck models.

It is precisely forged from 20CrMnTi alloy steel and hardened by carburizing and quenching, delivering excellent gear surface wear resistance, impact resistance and fatigue resistance.

The planetary gears bear load evenly, realizing stable transmission, low noise and high transmission efficiency.

Integrated with planet carrier, gears and shaft sleeve as an assembled unit, it features high precision and minimal clearance. It is vibration-resistant and anti-loosening, perfectly suitable for harsh working conditions such as heavy-load mountain roads and long-distance trunk lines with outstanding durability and reliability.