GrimmSpeed AOS Air Oil Separator for EJ WRX/STi Select Vehicle::2004+ STi / 2002-2007 WRX making it an ideal upgrade

making it an ideal upgrade to keep your new FA20-DIT running cool

Garrett® GTX Series turbochargers are designed specifically for the hard-core enthusiast who wants optimal performance

• Tests and Restores Battery Capacity

Increases pressure tolerance

Straight Blade Style

GrimmSpeed AOS Air Oil Separator for EJ WRX/STi Select Vehicle::2004+ STi / 2002-2007 WRX making it an ideal upgradeThe GrimmSpeed Subaru Air Oil Separator has a unique design that allows you to maintain your PCV Valve while separating the oil out of the crankcase and head ventilation air! Available for Subaru WRX, STi and LGT models in black or red. Vehicle Fitment: Color: Part Number: 2004 2021 STi 2002 2007 WRX Black 078006 Red 078006R Blue 078006B (Discontinued) 2008 2014 WRX 2005 2009 Legacy GT Black 078016 Red 078016R Blue 078016B (Discontinued) The AOS will