Genuine BorgWarner AirWerks S366SX turbocharger BorgWarner AirWerks S300SX3 Turbo - 91/80 BW part number 177281 aka S366SX Genuine BorgWarner AirWerks turbocharger Note: Currently, some compressor housings come without a logo! This is not a difference in quality! All components come directly from BW USA from the factory. AirWerks S366SX turbochargers from BorgWarner Turbo Systems are dedicated aftermarket turbos for the performance sector. Proven line-produced parts (mostly from Schwitzer Turbo) are being combined to deliver high end tuning and motorsports performance while maintaining an ideal price/performance ratio. performance rating: 320 - 800 HP compressor housing: intake 101mm / pressure side 76mm compressor wheel: inducer 66,11mm / exducer 91,44mm turbine housing: 0.88 AR / header flange T4 singlescroll / turbine outlet BorgWarner V-Band turbine wheel: inducer 79,76mm / exducer 73,37mm / external wastegate - dual hydrodynamic journal bearing - extended tip technology - Singlescroll turbine housing (twinscroll housings available) - adjustable orientation of compressor housing and turbine housing - compressor housing with anti-surge ports (High-Flow) Different A/R ratio? If you order an AirWerks turbocharger and wish to have a different AR you have to order the corresponding turbine housing separately.