Turbocharger and casing therefor

Turbocharger has a first unit (I) and a second unit (II) both having a common turbine housing (2) having feed channels (9, 9') for turbine rotors (4, 4'). A compressor housing (3, 3') extends away from the turbine housing. An Independent claim is also included for a turbine housing for a turbocharger. Preferred Features: Each unit has a rotor shaft (5) and both units lie on a common axis of rotation. The turbine housing has an exhaust gas outlet (10) leading away from the housing. The turbine housing is formed in one-piece.