Subaru Air/Oil Separator FXT 2004-2008, WRX 2002-2007, STI …
Note: This AOS can be installed to 2002-2005 WRXs with modification to or relocation of the Cruise Control Module. The COBB Subaru Air/Oil Separator helps to prevent crankcase oil vapors from recirculating back through your engine's intake system.
Air Oil Separators - IAG Performance
IAG Air / Oil Separator (AOS) Fits 2002-07 Subaru Impreza WRX, 2004-07 STI, 2004-08 FXT Availability: Usually Ships in 24 to 72 Hours $439.99
2002-2014 Subaru WRX and 2004-2021 Suba - MAPerformance
AIR/OIL SEPARATOR - WRX/STI/LGT/FXT. An Air/Oil Separator has one job, remove the oil from the engine ventilation system so the oil does not get sent through the intake system. The GrimmSpeed AOS is unique as it allows you to maintain your PCV Valve while separating the oil out of the crankcase and head ventilation air!
2002-07 Subaru WRX, 2004-21 Subaru - GrimmSpeed
Our AOS will allow your engine to run more efficiently due to the separation of oil from the intake system. When there is oil in your system, the result is: Reduced fuel octane; Higher chance of engine knock (detonation) Worse emissions; Higher oil consumption. Our Air/Oil Separator will help all of these problems.
Precision Works AOS Air Oil Separator - Subaru WRX 02-14 STI 04 …
Precision Works AOS Air Oil Separator - Subaru WRX 02-07 STi 04-19. Air oil separator removes oil from engine ventilation system so the oil does not get into the intake system. Key Features: Retains OEM PCV valve; Engine performs cleaner & efficiently Precision CNC machined; 6061 billet aluminum; High quality continental hose
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IAG Air / Oil Separator (AOS) Fits 2002-07 Subaru Impreza WRX, …
Developed through years of testing on standard and competitive applications, the IAG Air / Oil Separator offers unparalleled protection for your 2002-2007 Impreza WRX, 2004-2007 STI or 2004-2008 Forester XT engine.
Crawford Performance Air Oil Separator V2 WRX 2002-2007
Crawford Performance Air Oil Separator V2 - WRX 2002-2007 Oil pooling in your intake? Stop with the Crawford AOS. Maintenance Free. Reduces Oil Consumption. Reduce Risk of Engine Failure.
Perrin Air Oil Separator - AOS (02-07 WRX/STI) - Flatirons Tuning
The PERRIN Performance Air Oil Separator traps oil from the crank case vents before it enters the intake, thus increasing intercooler efficiency and reduces chances of performance-robbing detonation. The AOS increases intercooler efficiency by reducing the amount of oil deposited into your intercooler and intake system!
Radium AOS-R Kit - Subaru Models (inc. 2002-2007 WRX / STI / …
The AOS R kit will keep blow-by oil and other pollutants out of the intake pipe, intake manifold, turbocharger, and intercooler during all engine loads. The main difference is that the AOS R system returns what is collected into the oil pan, so no servicing is required.
GrimmSpeed Air Oil Seperator 02+ Subaru WRX STi
GrimmSpeed (AOS) Air/Oil Separator for the 02-07 Impreza WRX, 04-14 Impreza WRX STI, and 15+ WRX STI