The IAG Performance V3 Street Series Air / Oil separator (AOS) (Neon Yellow) 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 upstream of PCV gasses’ return to the intake system. The Street Series AOS' fully-heated cast aluminum housing, superior venting, and unique, patent pending, baffle design set it apart from the rest. The Street Series AOS is compatible with all fuel types, extends engine life, improves crankcase ventilation and is compatible with standard ECU calibrations.

Kit Includes: 1x Air Oil Separator, Plug and Play Hoses and Fittings, 1x Mounting Bracket
,The IAG AOS is designed to be maintenance free. Once the system is installed there is no further maintenance required.
,The Street Series AOS PCV discharge gasses return to the turbo inlet, retaining a PCV valve to draw additional suction, improving air oil separation. The Street Series AOS protects from oil dilution and lubrication failures in ethanol fueled application because the Street Series AOS captures fuel vapors out of the oil and returns these vapors to the intake tract for combustion.
,The position of each inlet hose on one side of the AOS body helps to create a “swirl” of the gasses inside. As the gasses enter they swirl around the inside of the AOS body and are funneled through a series of baffles.
,By attaching the AOS to the vehicle’s cooling system we are able to transfer the heat from the engine into the AOS. When the hot PCV gasses travel through a cold hose condensation forms inside. Over time this condensation mixes with the oil in the system and causes sludge. By heating the AOS body to the same temperature as the engine, the condensation, and the associated buildup, is reduced or nearly eliminated.
,For the 2022 Subaru WRX our engineers set out to make the system as easy to install as possible. We’ve developed specially designed custom injection molded fittings to connect to the unique breather ports of the 2022+ Subaru WRX. These fittings are plug-and-play to the OEM breather ports, so no modifications are required to the fittings.