Radium AOS-R Air Oil Separator for 08+ EJ WRX/STi (20-0607) Vorsteiner or red to compliment your

or red to compliment your engine bay

This install kit will plumb the fuel rails in series

2008-2024 Subaru WRX

These injectors have been permanently discontinued by DW

Part number HD0910NSGTR-DS

Radium AOS-R Air Oil Separator for 08+ EJ WRX/STi (20-0607) Vorsteiner or red to compliment yourRadium AOS R for 2008 2014 Subaru WRX and 2008 2021 STi. The AOS (Air Oil Separator) keeps blow by oil out of the intake pipe, manifold, turbo and intercooler. The AOS "R" system "returns" what is collected back into the oil pan so there is no servicing required! Vehicle Fitment: 2008 2014 Subaru WRX 2008 2021 Subaru STi Fits LHD left hand drive ONLY Install Notes: The Radium AOS R kit may not be compatible with all other aftermarket products. Install