General description The TurboCharger is an upgraded TD05 20G Turbo designed specifically for Subaru IMPREZA WRX / STI EJ20 and EJ25 engines from 2002 to 2006. This turbocharger enhances performance, allowing for horsepower of up to 380 HP. Note that WRX Wagon engines and automatic sedan engines originally come with a TD04 model, while manual WRX sedans, including STI versions, are equipped with a TD05 model. If your original turbo is a TD04, modifications to connections, bolts, and fixed screws will be necessary for installation. Technical specifications Exhaust Outlet Flange: 5-Bolt Flange Exhaust Inlet Flange: 3-Bolts Flange Turbine Trim: 76.4 Turbine Housing: 7cm² Turbine Inducer Diameter: 56mm Turbine Exducer Diameter: 48.96mm Compressor Trim: 59.8 Compressor Inducer Diameter: 52.6mm Compressor Exducer Diameter: 67.9mm Compressor Housing Inlet OD: 57.8mm Oil Inlet: M10*1.5 Oil Outlet: M15 & 2*M6H Water In/Out: M14*1.5 Wastegate: With Wastegate Bearing: Wet Float/Journal Bearing