1370 302 412 Input Shaft

1370 302 412 is the core input shaft for ZF 12-speed AMT gearbox. It connects the engine and the gearbox, transmitting power to the main gear set. Compatible with ZF 12TX series 12-speed automatic transmissions, it is suitable for Sinotruk SITRAK, HOWO and other heavy-duty truck models originally equipped with ZF automatic gearboxes.

The shaft body adopts precision CNC machining with coaxiality ≤ 0.02mm, and undergoes anti-corrosion and wear-resistant surface treatment. It adapts to long-term heavy-load and bumpy road conditions, effectively avoiding faults such as abnormal noise, vibration and power interruption. As an original genuine part with perfect compatibility, it serves as a core factory component for the maintenance and replacement of ZF 12-speed automatic gearboxes.

Original ZF 12-speed AMT input shaft, compatible with ZF 12TX2420/2620/2621/2821 and other 12-speed automatic gearboxes. It matches Sinotruk SITRAK C7H/C9H, HOWO TX/TS7 and other models factory-fitted with ZF automatic gearboxes.

Forged from high-strength alloy and integrally carburized and quenched, it features high spline precision, excellent wear resistance and fatigue resistance. It is not prone to shaft breakage or gear slipping under heavy load. With original factory dimensions, it allows direct replacement without modification. It delivers high transmission efficiency and stable operation, ideal for long-distance logistics and engineering heavy-duty working conditions. Its service life is more than 30% longer than aftermarket parts.