The Forced Performance 7151S UHF turbo for Subaru STi is a driver's-side 58mm compressor unit with a black housing and an external wastegate supplied with an oil line. Specified for STi applications, the description notes the 7151S UHF designation, 58mm compressor size, external WG setup and included oil line, and clarifies the turbo is intended for the driver's-side position.
Forced Performance Subaru STi 7151S UHF Turbo 58mm Black Housing External WG w/Oil Line (D/S Only)