ZF EcoLife 6 AP 1400 B
A Powerhouse for the Mercedes-Benz Citaro
For workshops and fleet operators maintaining city buses worldwide, the availability of reliable drivetrain components is critical. The ZF EcoLife transmission, specifically the 6 AP 1400 B model, is one of the most sought-after units on the secondary market.
Technical Details and Performance Data
The ZF EcoLife (6 AP series) was developed specifically to meet the rigorous demands of inner-city transit. The designation “1400” refers to the maximum input torque of 1,400 Newton meters. This makes the model perfectly suited for engines typically found in standard 12-meter transit buses.
The parts list number 4181040073 and the Mercedes-Benz part number A6282709201 identify the exact variant designed for integration into the Mercedes-Benz Citaro platform. A key feature of the EcoLife series is its 6-speed concept with a wide gear ratio spread. This allows for powerful acceleration from a standstill while maintaining low engine speeds in higher gears, significantly reducing fuel consumption and noise emissions.
A notable feature is the integrated TopoDyn Life control software (when used with the appropriate ECU). It automatically adjusts the shifting strategy based on topography and passenger load. This specific used transmission is supplied without the electronic control unit (ECU). For many mechanics, this is an advantage, as the existing, vehicle-specific programmed ECU can usually be reused.
Application in the Mercedes-Benz Citaro (2011 Model)
This particular unit originated from a 2011 Mercedes-Benz Citaro. During this era (the facelifted first generation O 530 or early Citaro C2), transport companies increasingly relied on Euro 5 or EEV engines, such as the OM 457 hLA or OM 906 hLA.
The Citaro is widely considered the most successful city bus in the world. Many vehicles from 2011 are now reaching the end of their primary service life in Central Europe and are being prepared for export. In Eastern Europe, Central Asia, or Africa, they often remain in service for another decade. Since the cost of a brand-new transmission often exceeds the residual value of older buses, a tested, fully functional used part like this ZF 6 AP 1400 B is the most economical solution to get a Citaro back on the road.
Summary of Identification Features:
Type: ZF EcoLife 6 AP 1400 B
Parts List Number: 4181040073
Mercedes-Benz Ref.: A6282709201
Max. Torque: 1,400 Nm
Gears: 6 forward, 1 reverse
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