PSR Forward Rotation 5455G Dual Ball Bearing Turbocharger HP Rating 660 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: W/O Compressor Housing Turbine Housing: W/O Turbine Housing Compressor Wheel: 54*67mm Turbine Wheel: 60*55mm Compressor Inlet: 3″ Hose or 4″ Horse Compressor Outlet: 2″ Hose Turbine Inlet: T25, T3, T4 or Vband Turbine Outlet: 3″ V-Band Water Ports: 2-M14 X 1.5 Oil Inlet: 7/16-24 UNF with a -4AN Restrictor pre-installed Oil Outlet: Std T3 Oil Drain Flange