IAG Street Air Oil Separator AOS Subaru WRX 08-14 / STI 08-21 / Forester XT 09-13 | IAG-ENG-7181RD vendor_Fast Turn Fittings COBB Logo Embossed on the

COBB Logo Embossed on the Exterior of the Case

Part #: XA17800+4505CMB

Shorter spacer and hardware w/ clip nut will need to be installed on the alternator (driver side) using the Subaru OEM STI bracket

Often when engines have been tuned by installing larger turbos or even software upgrades improved turbo response can be acheived by fitting the RS valve which has the greater internal mass air flow specification utilising an amazing 50mm (2") bore

IAG Street Air Oil Separator AOS Subaru WRX 08-14 / STI 08-21 / Forester XT 09-13 | IAG-ENG-7181RD vendor_Fast Turn Fittings COBB Logo Embossed on theFitment Information: 2008 2014 Subaru WRX 2008 2021 Subaru STI 2005 2009 Subaru Legacy GT 2009 2013 Subaru Forester XT Features: The IAG Performance V3 Street Series Air Oil separator (AOS) is an excellent investment to keep your Subaru vehicle running well. The Street Series AOS maintains OEM PCV system functionality, but supplements its capacity. The Street Series AOS design is based on years of extensive testing on standard and competition