Fits for original BorgWarner AirWerks S300SX3 S300SX-E S300SX-R Turbo BorgWarner AirWerks S300SX3 / S300SX-E turbine housing - 177209 T4 twinscroll - 1.00 A/R - 76mm turbine wheel Genuine BorgWarner AirWerks turbine housing You receive a single genuine turbine housing for a BorgWarner AirWerks turbocharger, this let you choose which A/R ratio orientation of the flange and flange type fits best to your application. Fits the subsequent turbochargers: S300SX3 (BorgWarner 177272, 177280, 177283) S300SX-E (BorgWarner 13009097056, 13009097006, 13009097008) For turbine wheels: 76,20mm A/R ratio: 1.00 Header flange: T4 divided / twinscroll Different A/R ratio? With this turbine housing you can fit your AirWerks turbocharger with a different A/R ratio. If you purchase an AirWerks turbocharger and wish to have a different A/R turbine housing, you have to order the corresponding turbine housing in addition. Notice: Mounting kit for turbine housing is sold separately!