Applies to: Model 634.011/012/061/071/081 #D as of 873958 up to 999999 with code G31 (ZF transmission 6HP504 Ecomat IV) with code G32 (ZF transmission 6HP594 Ecomat IV) with code GZ0 (Transmission ZF 6HP604 ECOMAT IV) Model 634.011/012/061/071/081 #H as of 000000 up to 054731 with code G31 (ZF transmission 6HP504 Ecomat IV) with code G32 (ZF transmission 6HP594 Ecomat IV) with code GZ0 (Transmission ZF 6HP604 ECOMAT IV)