The is a 6-speed automatic transmission system designed specifically for heavy-duty commercial vehicles, particularly city buses, intercity buses, and special-purpose vehicles. It is renowned for its robustness, fuel efficiency, and ability to handle high torque loads while minimizing maintenance costs.
The is a heavy-duty, fully automatic 6-speed transmission designed primarily for city and intercity bus applications. It is engineered to handle high engine torques up to 1,700 Nm and supports maximum vehicle weights of approximately 32 to 42 tonnes , depending on the configuration. Core Technical Specifications Feature Specification Max Input Torque 1,700 Nm (approx. 1,254 lb-ft) Transmission Weight ≈ 376 kg (dry, with retarder and oil cooler) Oil Capacity ≈ 42 dm³ (approx. 11.1 US gallons) Max Vehicle Weight 32t to 42t (varies by design and axle ratio) Total Spread 10.4 to 12.6 (including converter) Standard Gear Ratios zf ecolife 6ap1700b
While the 6AP 1700B is a staple in existing fleets, ZF has introduced the The is a 6-speed automatic transmission system designed
The "1700B" designation signifies its robust performance profile, capable of managing significant loads in varied topographies. It is engineered to handle high engine torques
Smart fleet managers are currently buying valve body gaskets, solenoid kits, and sensor harnesses, as ZF has begun phasing out certain "B" variant specific parts.