BorgWarner EFR Actuator HighBoost Turbos & Co. Borg Warner EFR Supply BorgWarner EFR Wastegate Actuator High Boost Genuine BorgWarner Wastegate Actuator - long version For BorgWarner T4 TwinScroll EFR 6258, EFR 6758, EFR 7163 or universal Genuine BorgWarner wastegate actuator designed for EFR series turbochargers with internal wastegate, used to achieve higher boost levels, can be used for universal applications as well. For turbocharger: EFR-6258 / T4 TwinScroll turbine housing EFR-6758 / T4 TwinScroll turbine housing EFR-7163 / T4 TwinScroll turbine housing Opening pressure (adjustable): 1,15 - 1,35 bar Fully open at: 2,22 bar WG actuator overall length: 140mm Thread length: 47mm