Turbocharger assembly

A system comprising:

• a housing assembly that comprises a compressor side bore and a turbine side bore having a common longitudinal axis;
• a compressor side cartridge disposed in the compressor side bore wherein the compressor side cartridge comprises an open recess that is open axially in an axial direction away from an axial side and that defines an azimuthal angle between two azimuthal sides;
• a compressor side locating plate attached to the housing assembly wherein the compressor side locating plate comprises an extension that is received by the open recess of the compressor side cartridge to limit rotation of the compressor side cartridge about the longitudinal axis;
• a turbine side cartridge disposed in the turbine side bore wherein the turbine side cartridge comprises a closed recess that is closed axially at opposing axial sides and that defines an azimuthal angle between two azimuthal sides;
• a turbine side locating plate attached to the housing assembly wherein the turbine side locating plate comprises an extension that is received by the closed recess of the turbine side cartridge to limit rotation of the turbine side cartridge about the longitudinal axis and to limit axial movement of the turbine side cartridge along the longitudinal axis;
• a shaft sleeve;
• a compressor side bearing assembly disposed in the compressor side cartridge and mounted to the shaft sleeve;
• and
• a turbine side bearing assembly disposed in the turbine side cartridge and mounted to the shaft sleeve,
• wherein the limitation of axial movement of the turbine side cartridge along the longitudinal axis by the turbine side locating plate limits axial movement of the compressor side cartridge along the longitudinal axis.