IAG Air / Oil Separator (AOS) For 2006-07 Subaru Impreza WRX & 2004-07 STI hoodie some 2006 models require the

some 2006 models require the WRX107X  *The fastest and most reliable way to tell

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Link G4+ Storm Black (Loom A also required) – Note: Loom B is not required for the older Silver or Blue G4 or G4+ Storm models

IAG Air / Oil Separator (AOS) For 2006-07 Subaru Impreza WRX & 2004-07 STI hoodie some 2006 models require theThe 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 applications. The Street Series AOS large, 1 liter, cast aluminum swirl pot canister more effectively separates oil from the PCV system