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  • Grimmspeed Air/Oil Separator (Subaru WRX / STi) - Modern Automotive Performance
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  • Grimmspeed Air/Oil Separator | Multiple Subaru Fitments
  • Grimmspeed Air/Oil Separator | Multiple Subaru Fitments
  • Grimmspeed Air/Oil Separator | Multiple Subaru Fitments
  • Grimmspeed Air/Oil Separator | Multiple Subaru Fitments
  • Grimmspeed Air/Oil Separator | Multiple Subaru Fitments
  • Grimmspeed Air/Oil Separator | Multiple Subaru Fitments
  • Grimmspeed Air/Oil Separator | Multiple Subaru Fitments
  • Grimmspeed Air/Oil Separator | Multiple Subaru Fitments
  • Grimmspeed Air/Oil Separator | Multiple Subaru Fitments
  • Grimmspeed Air/Oil Separator | Multiple Subaru Fitments

    MAP price match guarantee Unbeatable Price Guarantee

    GrimmSpeed

    Grimmspeed Air/Oil Separator | Multiple Subaru Fitments

    PART#
    We Price Match!

    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



    $ 299.00

    this item typically ships in 3-5 Days. Free delivery by , to your door when ordered within hrs and mins
    Fits Your
    MAP Loyalty: Earn $ 5.98 Toward Next Purchase!

    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! 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 1) reduced fuel octane 2) higher chance of engine knock(detonation) 3) worse emissions 4) higher oil consumption. Our AOS will solve all of these problems.

    In GrimmSpeed fashion, we have made a very compact unit that packs a powerful punch(and looks good while doing it)!

    No more having to check/empty your catch can and refilling your oil. The GrimmSpeed AOS coalesces oil without using a mesh media. Mesh medias can cause contaminates to collect and build up resulting in possible sludge. Our AOS is self maintained so you can just sit back, stop worrying, and enjoy driving your car!

    Features

    • Removes oil vapors from the intake
    • Retains OEM PCV Valve

    Benefits

    • Effectively increases octane by removing oil vapors from the intake system

    Applications

    • 2002-2007 Subaru WRX
    • 2004-2019 Subaru STI

    • 2008-2014 Subaru WRX
    • 2005-2009 Subaru Legacy GT
    • 2009+ Subaru Forester XT

    What's In The Box?

    • AOS
    • Fittings
    • Hose

    References

    Warranty

    • Manufacturer Standard Warranty

    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! 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 1) reduced fuel octane 2) higher chance of engine knock(detonation) 3) worse emissions 4) higher oil consumption. Our AOS will solve all of these problems.

    In GrimmSpeed fashion, we have made a very compact unit that packs a powerful punch(and looks good while doing it)!

    No more having to check/empty your catch can and refilling your oil. The GrimmSpeed AOS coalesces oil without using a mesh media. Mesh medias can cause contaminates to collect and build up resulting in possible sludge. Our AOS is self maintained so you can just sit back, stop worrying, and enjoy driving your car!

    Features

    • Removes oil vapors from the intake
    • Retains OEM PCV Valve

    Benefits

    • Effectively increases octane by removing oil vapors from the intake system

    Applications

    • 2002-2007 Subaru WRX
    • 2004-2019 Subaru STI

    • 2008-2014 Subaru WRX
    • 2005-2009 Subaru Legacy GT
    • 2009+ Subaru Forester XT

    What's In The Box?

    • AOS
    • Fittings
    • Hose

    References

    Warranty

    • Manufacturer Standard Warranty

    Customer Reviews

    Based on 7 reviews
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    J
    J.m.
    Grimmspeed aos

    This item totally looks amazing and also does the job!!
    Thanks maperformance for a fast delivery

    K
    K.
    Great product

    Work great and nice.

    J
    J.
    Easy Install

    Great part recieved everything as pictured and the AOS was very easy to install.

    J
    J.M.
    Genius

    The idea of this AOS is genius. Not big and bulky but still does the job. Tight fit with my front mount but still works.

    M
    M.W.
    Grimmspeed for the win!

    Works snd looks great!

    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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    Unfortunately due to vendor restrictions we are unable to sell this brand within Australia or the UK. If you have any questions, feel like you received this message in error or would like suggestions on other brands please contact us here.

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    Unfortunately we are not able to ship this item outside of the United States.
    If you have any questions please contact us at: 1-888-627-3736 or Email Us Here.