Cart 0
Subaru WRX 2002-2007 STi 2004-2019 AOS Air Oil Separator
Subaru WRX 2002-2007 STi 2004-2019 AOS Air Oil Separator
Subaru WRX 2002-2007 STi 2004-2019 AOS Air Oil Separator
Subaru WRX 2002-2007 STi 2004-2019 AOS Air Oil Separator
Subaru WRX 2002-2007 STi 2004-2019 AOS Air Oil Separator
Subaru WRX 2002-2007 STi 2004-2019 AOS Air Oil Separator
Subaru WRX 2002-2007 STi 2004-2019 AOS Air Oil Separator
Subaru WRX 2002-2007 STi 2004-2019 AOS Air Oil Separator

Subaru WRX 2002-2007 STi 2004-2019 AOS Air Oil Separator

Air oil separator removes oil from your engine ventilation system so the oil does not get into the intake system.

Vehicle Fitment:

  • Subaru WRX 2002-2007

  • Subaru STi 2004-2019

Key Features:

  • Retains OEM PCV valve

  • Engine performs cleaner and more efficiently 

  • Precision CNC machined

  • 6061 billet aluminum

  • High quality continental hose

  • Includes fittings, caps, and zip ties