IAG Air / Oil Separator (AOS) Fits 2022-24 Subaru WRX

The IAG Air / Oil Separator (AOS) is a smart move to protect your Subaru's engine. Developed over years of extensive testing on a range of standard and competitive applications, the IAG AOS offers unparalleled protection for your 2022-2024 WRX FA24F 2.4L engine. Our exclusive AOS design incorporates a 1-liter cast aluminum swirl pot canister that significantly improves oil separation from the PCV system before returning PCV gasses to the intake. Crafted from a lightweight yet durable aluminum housing, the IAG AOS provides enhanced ventilation and features an innovative baffle design that sets it apart from the competition. This AOS works with all fuel types, improves crankcase ventilation, and incorporates our innovative baffle design that sets it apart from competitors' products.