Air Oil Separator

An Air/Oil (AOS) Separator has one job. To remove the oil from the engine ventilation system so the oil does not get sent through the intake system.

Air Oil Separator

An Air/Oil (AOS) Separator has one job. To remove the oil from the engine ventilation system so the oil does not get sent through the intake system.

Showing 1 - 17 of 17 items
  • The IAG Performance Street Series billet aluminum Air / Oil separator (AOS) vents crankcase gasses back to the turbo inlet. The design is based on years of service on racing and high horsepower Subaru's. The AOS's approximate 1 liter capacity, fully heated housing, superior breathing and unique patent pending baffle design sets it apart from the rest. 

    Subaru
  • NOTE:

    IAG-ENG-7250BK superseded to ENG-7280BK

    IAG-ENG-7250RD superseded to ENG-7280RD

    The IAG Performance Competition Series billet aluminum Air / Oil separator (AOS) vents crankcase vapors to the atmosphere. The design is based on years of service in racing and high horsepower Subaru's. The AOS's approximate 1-liter capacity, fully heated housing, superior breathing, and unique patent-pending baffle design sets it apart from the rest.

    Subaru
  • NOTE:

    IAG-ENG-7252BK superseded to ENG-7282BK

    IAG-ENG-7252RD superseded to ENG-7282RD

    The IAG Performance Competition Series billet aluminum Air / Oil separator (AOS) vents crankcase vapors to the atmosphere. The design is based on years of service in racing and high horsepower Subaru's. The AOS's approximate 1-liter capacity, fully heated housing, superior breathing, and unique patent-pending baffle design set it apart from the rest. 

    Subaru
  • NOTE:

    IAG-ENG-7251BK superseded to ENG-7281BK

    IAG-ENG-7251RD superseded to ENG-7281RD


    The IAG Performance Competition Series billet aluminum Air / Oil separator (AOS) vents crankcase vapors to the atmosphere. The design is based on years of service in racing and high horsepower Subaru's. The AOS's approximate 1-liter capacity, fully heated housing, superior breathing, and unique patent-pending baffle design sets it apart from the rest. 

    Subaru
  • The Killer B Motorsports Complete Air Oil Separator System has been designed to keep harmful oil contaminants from entering the intake system of your engine. This component will remove oil in both liquid and vapor form from the vented crankcase gasses, and it functions with a vacuum source on the turbo inlet. Turbo size will not affect the function of this air/oil separator.

    Subaru
  • The Killer B Motorsports Barebones Air Oil Separator has been designed to keep harmful oil contaminants from entering the intake system of the FA20. This component will remove oil in both liquid and vapor form from the vented crankcase gasses, and it functions with a vacuum source on the turbo inlet. Turbo size will not affect the function of this air/oil separator.

    Subaru
  • The Killer B Motorsport Air/Oil Separator functions with a vacuum source only, the turbo inlet. This provides the vacuum source for the crankcase. It is in no way effected by the turbo size, in fact a larger turbo that draws more air will improved separator function, compensating for increased venting requirements seen at improved performance levels. While small OEM turbochargers produce crankcase vacuum under boost, larger turbochargers produce even more. Drain back design assures that any oil accumulation ends up where it needs to be, in the oil pan, providing a consistent oil supply to the engine. Six stainless steel bolts on the top, make it quick and easy for inspection and cleaning. It is not heated and we see no reason to add unnecessary cooling/heating (weight, complexity, increased install time, and increase probability of something leaking) and this simple engineered form functions just fine without it. The Killer B Motorsport Air/Oil Separator should meet and exceeds your expectations of how an Air/Oil Separator should work and function on a Subaru engine. Not only that, it will display some of the best eye candy fabrication available. The Killer B Motorsport Air/Oil Separator is a product that you the enthusiasts, have been waiting years for.

    Subaru
  • Introducing the newly released Tomioka Racing Air and Oil Separator (AOS)! The air and oil separator is a must have unit for all Subaru engines! Constructed from high-quality aluminum, this handy unit will help you lower emission, keep the intake charge pipe clean, reduce the oil burned in the engine and reduce the detonation due to a dirty intake charge pipe. Tomioka Racing AOS is compatible with factory PCV system, and it drains oil into the factory oil pan automatically.

    Subaru
  • NOTE:

    IAG-ENG-7152BK superseded to ENG-7182BK

    IAG-ENG-7152RD superseded to ENG-7182RD


    The IAG Performance Street Series billet aluminum Air / Oil separator (AOS) vents crankcase gasses back to the turbo inlet. The design is based on years of service in racing and high horsepower Subaru's. The AOS's approximate 1-liter capacity, fully heated housing, superior breathing, and unique patent-pending baffle design sets it apart from the rest.

    Subaru
  • NOTE:

    This product has been superseded to ENG-7181BK & ENG-7181RD


    The IAG Performance Street Series billet aluminum Air / Oil separator (AOS) vents crankcase gasses back to the turbo inlet. The design is based on years of service in racing and high horsepower Subaru's. The AOS's approximate 1-liter capacity, fully heated housing, superior breathing, and unique patent-pending baffle design sets it apart from the rest. 

    Subaru
  • Discontinued product

    NOTE: This product number has been discontinued by the manufacturer.

     

    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 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.

    Subaru
  • Mishimoto is expanding their line of 2015 WRX parts! High oil temperatures can wreak havoc on your high-performance 2015 WRX FA20 DIT. Protect your investment with the Mishimoto direct-fit oil cooler kit designed specifically for the 2015+ Subaru WRX. The 2015 WRX has tons to offer with its turbocharged engine and fantastic AWD system, but the stock 2015 WRX liquid-to-liquid oil cooler cannot handle prolonged aggressive driving conditions. 

    Subaru
  • 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.

    Subaru
  • 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. 

    Subaru
  • 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. 

    Saab
    Subaru
  • The Beatrush Oil/Air Separator tank allows your vehicle to perform its best by removing oil vapors from the breather line. This helps to keep your engine clean as well as remove contaminants that can rob power. Beatrush has made a very simple to install system that will help eliminate these problems and allow your intake and vacuum system to work more efficiently. 

    Subaru
Showing 1 - 17 of 17 items