IAG Air / Oil Separator (AOS) For 2022+ Subaru WRX

The IAG Air / Oil Separator (AOS) is a smart move to protect and enhance your Subaru's performance. Developed over years of extensive testing on a range of standard and competitive applications, the IAG AOS offers unparalleled protection for your 2022+ WRX 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, prolongs the lifespan of your engine, improves crankcase ventilation and incorporates our innovative baffle design that sets it apart from competitors’ products.
 
Oil seeping into the engine's intake tract can have detrimental effects. It is vital to prevent oil from entering the engine intake to avoid premature mechanical issues and uphold optimal performance in your Subaru. Oil coated components in the intake, intercooler, and plumbing can cause rubber and silicone hose connections to deteriorate. Once inside the intake tract, the oil can affect the intake manifold and then the engine’s combustion chamber, potentially triggering detonation, pre-ignition, excessive emissions, smoke, power loss, reduced fuel efficiency, and even engine damage or complete engine failure.