PSR Forward Rotation 4849G Dual Ball Bearing Turbocharger HP Rating 550 Dual Ceramic ball bearing system provides optimal turbo response & better durability by reducing the shaft-motion 9 Blade G-Aero Billet Compressor Wheel with Extended Tapered Tip Technology 9 Blade G-Aero Inconel 713c Turbine Wheel Anti-Surge ported-shroud compressor inlet, cover integrated with the speed sensor port Internally Wastegated, Billet Actuator(Working pressure 12 psi) Compressor Housing: Without Compressor Housing Turbine Housing: Without Turbine Housing or Actuator Rotation: Forward Compressor Wheel: 48*60mm Turbine Wheel: 54*49mm Compressor Inlet: 3″ Hose Compressor Outlet: 2″ Hose Turbine Inlet: 2.5″ V-Band, T25 or T3 Turbine Outlet: 3″ V-Band Water Ports: -6AN Oil Feed: -4AN to the Oil Restrictor Oil Drain: Std T3 Oil Drain Flange