Fits for original BorgWarner AirWerks S400SX4 S400SX-E Turbo BorgWarner AirWerks S400 turbine housing - 171698 T6 Twin Scroll - 1.32 A/R - 96mm 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: BorgWarner S400SX4 / S400SX-E For turbine wheels: 96mm A/R ratio: 1.32 Header flange: T6 / 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!