Retarder 120 E – a wide range of use in buses

    The Voith Retarder 120 E is an inline oil retarder with its own transmission-independent oil supply. It is an ideal choice for long-distance and tour buses.

    Features and benefits

    • Higher average speed
    • Fewer visits to workshops
    • Reduction of vehicle operating costs
    • Less service brake overhauls and tires
    • Fast amortization
    • Hydrodynamic Retarders are more fuel-saving than electro-magnetic Retarders
    • Advantages for a vehicle resale

    Technical data

    Voith Retarder 120 E*  
    Max. braking torque at the retarder shaft 2 200 Nm
    Maximum speed at the propshaft 3 000 pro min
    Standard operation

    hand-brake switch with function v-constant (downhill cruise control) option: foot control

    Operating medium oil (see fuel specifiation)
    Fill rate (oil change) 4,2 l
    Control medium compressed air
    Unit weight incl. flange, heat exchanger, without operating medium approx. 59 kg
    Nominal voltage 24 V
    CAN-bus-specific electronic control system VERA


    *Voith Local China Retarder 120 E for Buses and Trucks


      Service – where your bus is in good hands

        Whether it’s maintenance or repairs, troubleshooting, or the functional testing of individual components: our professionals will make sure you stay on the road. At the Voith retarder workshop in Crailsheim, and throughout the world.

        Judge us by our performance

        • Onboard troubleshooting and upgrade 
        • Replacement and repair 
        • Repair of supplied retarders (all model series) 
        • Troubleshooting and functional testing of individual components 
        • Worldwide delivery of Voith original spare parts, as well as 
        • replacements and basic retarders

        Retarder oil list

        Do you have any questions about Voith Retarder 120 E? We’re here to help!

          Service contact

          Voith GmbH & Co. KGaA

          Mobility Service

          Hardtstraße 8 74564 Crailsheim, Germany


          Technical Support

          Technical Support


          t +49 7951 32-1555

          f +49 7951 32-1506

          Spare parts orders

          Spare parts orders


          t +49 7951 32-1644

          f +49 7951 32-756