General description This TD05 20G Upgraded Turbo is designed for Subaru IMPREZA WRX and STI models with EJ20 and EJ25 engines from 2002 to 2006. It is important to note that WRX Wagon engines and automatic sedan engines originally come with a TD04 turbo, while manual WRX sedans, including STI versions, are equipped with a TD05 model. If your original turbo is a TD04, some 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 Feed: M10*1.5 Oil Drain: 2*M6*1.0 Water In/Out: M14*1.5 Compressor housing inlet OD: 57.8mm, ID: 53.62mm Compressor housing outlet OD: 51.2mm, ID: 41.2mm Bearing: Wet Float/Journal Bearing