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  • IAG Performance Competition Series (AOS) Air/Oil Separator | Subaru Impreza WRX /STI (IAG-ENG-7200) - Modern Automotive Performance
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  • IAG Performance Competition Series (AOS) Air/Oil Separator | Subaru Impreza WRX /STI (IAG-ENG-7200) - Modern Automotive Performance
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  • IAG Performance Competition Series (AOS) Air/Oil Separator | Subaru Impreza WRX /STI (IAG-ENG-7200) - Modern Automotive Performance
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  • IAG Performance Competition Series (AOS) Air/Oil Separator | Subaru Impreza WRX /STI (IAG-ENG-7200) - Modern Automotive Performance
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  • IAG Performance Competition Series (AOS) Air/Oil Separator | Subaru Impreza WRX /STI (IAG-ENG-7200) - Modern Automotive Performance
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  • IAG Performance Competition Series (AOS) Air/Oil Separator | Subaru Impreza WRX /STI (IAG-ENG-7200) - Modern Automotive Performance
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  • IAG Performance Competition Series (AOS) Air/Oil Separator | Subaru Impreza WRX /STI (IAG-ENG-7200) - Modern Automotive Performance
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  • IAG Performance Competition Series (AOS) Air/Oil Separator | Subaru Impreza WRX /STI (IAG-ENG-7200) - Modern Automotive Performance
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  • IAG Performance Competition Series (AOS) Air/Oil Separator | Subaru Impreza WRX /STI (IAG-ENG-7200) - Modern Automotive Performance
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  • IAG Competition Series Air/Oil Separator | Subaru Impreza WRX / STI (IAG-ENG-72)
  • IAG Competition Series Air/Oil Separator | Subaru Impreza WRX / STI (IAG-ENG-72)
  • IAG Competition Series Air/Oil Separator | Subaru Impreza WRX / STI (IAG-ENG-72)
  • IAG Competition Series Air/Oil Separator | Subaru Impreza WRX / STI (IAG-ENG-72)

    MAP price match guarantee Unbeatable Price Guarantee

    IAG Performance

    IAG Competition Series Air/Oil Separator | Subaru Impreza WRX / STI

    PART#
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    Contact us to ensure you're getting the right part for your car at the absolute best pricing on earth!

    Email - sales@maperformance.com
    Phone 1(888)627-3736



    $ 379.99   $ 398.99
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    IAG PERFORMANCE COMPETITION SERIES AIR / OIL SEPARATOR (AOS)

    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 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 set it apart from the rest.

    As the air makes its way through the multi-stage baffle system, gravity pulls oil from the air. By increasing the diameter of the breather opening on the top of the AOS, we have drastically decreased the exit velocity of the crankcase vent (CCV) stream. The slower velocity leads to greater oil separation from the pressure stream. A total of 9 mounting holes enables the breathing port a full 180° of rotation. On the bottom, a thick Viton o-ring seals the can. Every o-ring in our AOS is formed from Viton which offers superior temperature and chemical resistance.

    Features

    • Large Billet Aluminum Design
    • Approximate 1 Liter Holding Capacity
    • Integrated 3 Port Billet Hose Barbs
    • Aluminum Body Powder Coated Black, Red
    • All fittings supplied with the AOS are anodized aluminum and feature Viton sealed ORB fittings

    Benefits

    • Unique Baffling Controls Crankcase Pressure
    • Reduces Moisture & Oil Mixing
    • 180° Breather Port Rotation For Install Ease​
    • Returns Oil To The Engine
    • No Maintenance or Manual Draining Required

    Please Note:

    • The IAG AOS is not compatible with most aftermarket strut tower bars​

    Applications

    • 2006-2007 Subaru WRX / 2004-2007 STI (IAG-ENG-7250)
    • 2008-2014 Subaru WRX / 2008-2019 STI (IAG-ENG-7251)
    • 2015-2018 Subaru WRX​ (IAG-ENG-7252)

      What's in the Box?

      • Hardware, Lines & Fittings Included​
      • Multi-point Adjustable Mounting Bracket​
      • Ready To Install

      References

      Warranty

        IAG PERFORMANCE COMPETITION SERIES AIR / OIL SEPARATOR (AOS)

        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 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 set it apart from the rest.

        As the air makes its way through the multi-stage baffle system, gravity pulls oil from the air. By increasing the diameter of the breather opening on the top of the AOS, we have drastically decreased the exit velocity of the crankcase vent (CCV) stream. The slower velocity leads to greater oil separation from the pressure stream. A total of 9 mounting holes enables the breathing port a full 180° of rotation. On the bottom, a thick Viton o-ring seals the can. Every o-ring in our AOS is formed from Viton which offers superior temperature and chemical resistance.

        Features

        • Large Billet Aluminum Design
        • Approximate 1 Liter Holding Capacity
        • Integrated 3 Port Billet Hose Barbs
        • Aluminum Body Powder Coated Black, Red
        • All fittings supplied with the AOS are anodized aluminum and feature Viton sealed ORB fittings

        Benefits

        • Unique Baffling Controls Crankcase Pressure
        • Reduces Moisture & Oil Mixing
        • 180° Breather Port Rotation For Install Ease​
        • Returns Oil To The Engine
        • No Maintenance or Manual Draining Required

        Please Note:

        • The IAG AOS is not compatible with most aftermarket strut tower bars​

        Applications

        • 2006-2007 Subaru WRX / 2004-2007 STI (IAG-ENG-7250)
        • 2008-2014 Subaru WRX / 2008-2019 STI (IAG-ENG-7251)
        • 2015-2018 Subaru WRX​ (IAG-ENG-7252)

          What's in the Box?

          • Hardware, Lines & Fittings Included​
          • Multi-point Adjustable Mounting Bracket​
          • Ready To Install

          References

          Warranty

            Customer Reviews

            Based on 8 reviews
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            L
            L.G.
            Application on 09 wrx

            Fits great. One of the best insurance policies on your wrx. Word of advice: if you have a large TMIC on your 08-14 wrx, you might need to extend the coolant line to fit. Also you don't need the 90 degree fitting for the oil drain.

            J
            J.M.

            I love it thanks guys for my item

            T
            T.
            IAG AOS

            Pretty easy straight forward install looks great.

            J
            J.S.
            2018 AOS Competition series

            Works great, installing is straight forward until you get to the breather behind the A/C pump. There is no disconnecting the line, you must unbolt compressor. Slide it ahead, cut the line near top bend amd then install the supplied hose with just the 90* fitting. Cut that 4” length off amd zip tie it. The EXU is different in 2018 it is actually moRe forward than previous year so my new bracket is actually being unused lol. You still need the room there tho because the old bracket is im the way.

            J
            J.M.
            IAG AOS

            Arrived very quickly, and fairly easy install. You can’t put a price on saving a subies life. This was a smart purchase. All subies need this stock or modded

            MAP Limited Lifetime Warranty

            1.) All MAPerformance in-house fabricated parts include a Limited Lifetime Warranty for the Original Purchaser. This warranty only applies to the original purchaser and is non-transferrable. If the product fails it would need to be determined by MAPerformance that it is due to manufacturing defects in materials or workmanship.

            2.) This does not cover normal wear and tear. Improper use, modification, or abuse voids this warranty. MAPerformance will not be held responsible for additional costs due to the failure of a product (cost of sale, towing, labor, etc.). Warranty claims must be submitted to MAPerformance for review.

            3.) You must create a support ticket to acquire your return authorization number prior to returning the product.

            4.) Warranty claims will not be honored if the product was not purchased through an approved dealer.

            For warranty evaluation please create a support ticket via this form here.

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