Turbocharger specs: 66mm turbo inlet, larger turbo inlet is required 66mm 7 7 design billet compressor wheel 63mm 9 blade high-flow turbine wheel Stainless steel exhaust housing, matched to increased flow of the turbine wheel Heavy duty bearings and thrust washers VSR balanced Compatible with any exhaust, any charge pipe, and 66mm turbo inlet Transfer of factory diverter valve and boost pressure relief valve (06M133554A, pay attention on how it is installed). **Note that these results were achieved in a vehicle with full bolt-ons and upgraded fueling system (RS6 injectors, HPFP and LPFP upgrade, 4BAR Map sensors) and Logic Street Performance stage 3 tuning. Your result may vary. Parts required for installation (not included): 2x 06M253039G – exhaust manifold gasket 1x 059253232C – exhaust ring gasket 1x WHT006901A – oil feed o-ring 3x WHT007689 – oil feed and coolant o-ring 4x WHT004982 – barrel nut 4x N91130801 – exhaust nut 1x WHT007923 – connecting pipe o-ring 2x 8K0253115K – exhaust gasket 1x N0138441 – seal for boost pressure relief (jet) valve