IHI RHF55 VF49 Twin-Scroll Turbocharger

The Genuine New Subaru Impreza WRX STI EJ20 GRB/GVB/VAB IHI RHF55 VF49 turbocharger is a direct replacement part, bearing Subaru's P/N 14411-AA690. This genuine IHI unit is built with a durable journal bearing and features a twin-scroll turbine housing with a P25 A/R for improved exhaust flow. Designed for the EJ20 engine found in the GRB/GVB/VAB Subaru Impreza WRX STI models, this turbocharger is capable of supporting 308 to 400 PS. It is oil and water-cooled for optimal thermal management. The manufacturer recommends a boost pressure of 1.2 to 1.5 bar for daily street use. Key specifications include a compressor wheel measuring 46.5/60.0mm with a Trim 60, and a turbine wheel measuring 48.0/53.0mm with a Trim 82. The turbo comes equipped with a genuine actuator.