Single Chamber Air Oil Separator V2 AOS Kits

10 products

Why Upgrade to Single Chamber Air Oil Separator V2 AOS Kits?

Single chamber (V2) Air Oil Separator kits feature the widest fitment options available. This design requires you to delete your PCV valve, and are best suited for track setups. If you would like to keep your PCV in place, check out our V3 kits.

Single Chamber Air Oil Separator V2 AOS Kits are designed to separate oil vapor from the air before it enters the engine. This ensures that only clean air enters the engine, which helps to improve engine performance and longevity. The V2 version of our AOS kits comes with several improvements over the previous version, including improved durability, easier installation, and better oil separation efficiency.


One of the key benefits of using a Single Chamber Air Oil Separator V2 AOS Kit is that it helps to maintain the health of your engine. Oil vapor can degrade engine components over time, leading to reduced performance and potentially costly repairs. By eliminating oil vapor, our AOS kits help to extend your engine's lifespan and reduce the risk of damage.


Our Single Chamber Air Oil Separator V2 AOS Kits are also great for performance enthusiasts. Oil vapor can reduce engine power and throttle response, which can be a major problem for those looking to get the most out of their engine. By installing a Single Chamber Air Oil Separator V2 AOS Kit, you can help to maximize your engine's potential and get the power and performance you've been looking for.


Installation of our Single Chamber Air Oil Separator V2 AOS Kits is a breeze, and can be done in as little as an hour with basic hand tools. The V2 version of our kit features improved installation instructions and hardware, making the process even easier and more foolproof. Plus, our AOS kits are designed to be maintenance-free, meaning you can install them and forget about them, while still enjoying all the benefits they provide.


So if you're looking to upgrade your engine and get the most out of your performance vehicle, consider investing in a Single Chamber Air Oil Separator V2 AOS Kit. With improved durability, easier installation, and superior oil separation efficiency, our AOS kits are the perfect addition to any engine setup.

  •
    $ 399.99
    $ 399.99

    Crawford Performance Air Oil Separator V2 - WRX 2002-2007

    Crawford Performance Air Oil Separator: The Subaru Original

    • Not a Catch Can - Closed Loop and Maintenance Free

    • Consume Less Oil

    • Extend the Life of your Engine

    • Reduce Detonation and Risk of Engine / Ringland Failure

    • Reduce Fuel Dilution and Subsequent Power Loss

    Oil pooling in your intake? Stop the oil from ever getting there with the Crawford Air Oil Separator. 

    The Crawford Performance Air Oil Separator (AOS) is the original solution to Subaru's notorious oiling system issues. Although the technology was pre-existing with other vehicle brands such as Porsche, Crawford Performance is the inventor of the first system specifically for Subaru. No other AOS on the market employs the same technology.

    Notes: For Off-Road Use Only

    Want to know more about how an Air/Oil Separator works and why you need one? 

    Click here to check out our FAQ blog on the technology inside. 
    There you can also find a full fitment list for all current versions and kits.

    Also check out our latest technology with patent pending:
    The Crawford Performance Dual Chamber AOS (V3)

    This item is non-returnable at sale pricing.

    //

  • $ 399.99
    $ 399.99

    Crawford Performance Air Oil Separator V2 STI 2008-2014

    Crawford Performance Air Oil Separator: The Subaru Original

    • Not a Catch Can - Closed Loop and Maintenance Free

    • Consume Less Oil

    • Extend the Life of your Engine

    • Reduce Detonation and Risk of Engine / Ringland Failure

    • Reduce Fuel Dilution and Subsequent Power Loss

    Oil pooling in your intake? Stop the oil from ever getting there with the Crawford Air Oil Separator.

    The Crawford Performance Air Oil Separator (AOS) is the original solution to Subaru's notorious oiling system issues. Although the technology was pre-existing with other vehicle brands such as Porsche, Crawford Performance is the inventor of the first system specifically for Subaru. No other AOS on the market employs the same technology.

    Note: For Off-Road Use Only

    Want to know more about how an Air/Oil Separator works and why you need one? 

    Click here to check out our FAQ blog on the technology inside. 
    There you can also find a full fitment list for all current versions and kits.

    Also check out our latest technology with patent pending:
    The Crawford Performance Dual Chamber AOS (V3)

    //

  • $ 399.99
    $ 399.99


    Crawford Performance Air Oil Separator V2 -Universal

    Crawford Performance Air Oil Separator: The Subaru Original

    • Not a Catch Can - Closed Loop and Maintenance Free

    • Consume Less Oil

    • Extend the Life of your Engine

    • Reduce Detonation and Risk of Engine / Ringland Failure

    • Reduce Fuel Dilution and Subsequent Power Loss

    *Note: This is a universal cannister for Turbo applications

    Oil pooling in your intake? Stop the oil from ever getting there with the Crawford Air Oil Separator.

    The Crawford Performance Air Oil Separator (AOS) is the original solution to Subaru's notobrious oiling system issues. Although the technology was pre-existing with other vehicle brands such as Porsche, Crawford Performance is the inventor of the first system specifically for Subaru. No other AOS on the market employs the same technology.

    Want to know more about how an Air/Oil Separator works and why you need one? Click here to check out our FAQ blog on the technology inside. 
    There you can also find a full fitment list for all current versions and kits.

    Note: For Off-Road Use Only

    Check out our latest technology with patent pending:
    The Crawford Performance Dual Chamber AOS (V3)

    //

  • $ 399.99
    $ 399.99
    $ 429.99

    Crawford Performance Air Oil Separator V2- Legacy GT 2005-2009

    Crawford Performance Air Oil Separator: The Subaru Original 

    • Not a Catch Can - Closed Loop and Maintenance Free

    • Consume Less Oil

    • Extend the Life of your Engine

    • Reduce Detonation and Risk of Engine / Ringland Failure

    • Reduce Fuel Dilution and Subsequent Power Loss


    Oil pooling in your intake? Stop the oil from ever getting there with the Crawford Air Oil Separator.

    The Crawford Performance Air Oil Separator (AOS) is the original solution to Subaru's notorious oiling system issues. Although the technology was pre-existing with other vehicle brands such as Porsche, Crawford Performance is the inventor of the first system specifically for Subaru. No other AOS on the market employs the same technology. 

    Note: For Off-Road Use Only

    Want to know more about how an Air/Oil Separator works and why you need one? 

    Click here to check out our FAQ blog on the technology inside. 
    There you can also find a full fitment list for all current versions and kits.

    Also check out our latest technology with patent pending:
    The Crawford Performance Dual Chamber AOS (V3)

    //

  • $ 399.99
    $ 399.99
    $ 429.99

    Crawford Performance Air Oil Separator V2 - Forester XT 2004-2006

    Crawford Performance Air Oil Separator: The Subaru Original

    • Not a Catch Can - Closed Loop and Maintenance Free

    • Consume Less Oil

    • Extend the Life of your Engine

    • Reduce Detonation and Risk of Engine / Ringland Failure

    • Reduce Fuel Dilution and Subsequent Power Loss


    Oil pooling in your intake? Stop the oil from ever getting there with the Crawford Air Oil Separator.

    The Crawford Performance Air Oil Separator (AOS) is the original solution to Subaru's notorious oiling system issues. Although the technology was pre-existing with other vehicle brands such as Porsche, Crawford Performance is the inventor of the first system specifically for Subaru. No other AOS on the market employs the same technology.

    Note: For Off-Road Use Only

    Want to know more about how an Air/Oil Separator works and why you need one? 

    Click here to check out our FAQ blog on the technology inside. 
    There you can also find a full fitment list for all current versions and kits.

    Also check out our latest technology with patent pending:
    The Crawford Performance Dual Chamber AOS (V3)

    //

  • $ 399.99
    $ 399.99
    $ 429.99

    Crawford Air Oil Separator (V2) - Subaru WRX 2008-2014

    Crawford Performance Air Oil Separator: The Subaru Original

    • Not a Catch Can - Closed Loop and Maintenance Free

    • Consume Less Oil

    • Extend the Life of your Engine

    • Reduce Detonation and Risk of Engine / Ringland Failure

    • Reduce Fuel Dilution and Subsequent Power Loss

    Oil pooling in your intake? Stop the oil from ever getting there with the Crawford Air Oil Separator.

    The Crawford Performance Air Oil Separator (AOS) is the original solution to Subaru's notorious oiling system issues. Although the technology was pre-existing with other vehicle brands such as Porsche, Crawford Performance is the inventor of the first system specifically for Subaru. No other AOS on the market employs the same technology.

    Note: For Off-Road Use Only

    Want to know more about how an Air/Oil Separator works and why you need one? 

    Click here to check out our FAQ blog on the technology inside. 
    There you can also find a full fitment list for all current versions and kits.

    Also check out our latest technology with patent pending:
    The Crawford Performance Dual Chamber AOS (V3)

    //

  • $ 399.99
    $ 399.99
    $ 429.99

    Crawford Performance Air Oil Separator V2
    STI 2008-2014

    Crawford Performance Air Oil Separator: The Subaru Original

    • Not a Catch Can - Closed Loop and Maintenance Free

    • Consume Less Oil 

    • Extend the Life of your Engine

    • Reduce Detonation and Risk of Engine / Ringland Failure

    • Reduce Fuel Dilution and Subsequent Power Loss 

    Oil pooling in your intake? Stop the oil from ever getting there with the Crawford Air Oil Separator.

    The Crawford Performance Air Oil Separator (AOS) is the original solution to Subaru's notorious oiling system issues. Although the technology was pre-existing with other vehicle brands such as Porsche, Crawford Performance is the inventor of the first system specifically for Subaru. No other AOS on the market employs the same technology. 

    Note: For Off-Road Use Only

    Want to know more about how an Air/Oil Separator works and why you need one? 

    Click here to check out our FAQ blog on the technology inside. 
    There you can also find a full fitment list for all current versions and kits.

    Also check out our latest technology with patent pending:
    The Crawford Performance Dual Chamber AOS (V3)

    //

  • $ 399.99
    $ 399.99
    $ 429.99

    Crawford Performance Air Oil Separator V2 STI 2015-2021

    Crawford Performance Air Oil Separator: The Subaru Original

    • Not a Catch Can - Closed Loop and Maintenance Free

    • Consume Less Oil 

    • Extend the Life of your Engine

    • Reduce Detonation and Risk of Engine / Ringland Failure

    • Reduce Fuel Dilution and Subsequent Power Loss

    Oil pooling in your intake? 
    Stop the oil from ever getting there with the Crawford Air Oil Separator.

    The Crawford Performance Air Oil Separator (AOS) is the original solution to Subaru's notorious oiling system issues. Although the technology was pre-existing with other vehicle brands such as Porsche, Crawford Performance is the inventor of the first system specifically for Subaru. No other AOS on the market employs the same technology.

    Note: For Off-Road Use Only

    Want to know more about how an Air/Oil Separator works and why you need one? 

    Click here to check out our FAQ blog on the technology inside. 
    There you can also find a full fitment list for all current versions and kits.

    Also check out our latest technology with patent pending:
    The Crawford Performance Dual Chamber AOS (V3)

    //

  • $ 399.99
    $ 399.99
    $ 429.99

    Crawford Performance Air Oil Separator V2 Forester XT 2007-2013

    The Subaru Original

    V3 Also Available - Click Here

    • Not a Catch Can - Closed Loop and Maintenance Free 

    • Consume Less Oil

    • Extend the Life of your Engine

    • Reduce Detonation and Risk of Engine / Ringland Failure

    • Reduce Fuel Dilution and Subsequent Power Loss

    Oil pooling in your intake? Stop the oil from ever getting there with the Crawford Air Oil Separator.

    The Crawford Performance Air Oil Separator (AOS) is the original solution to Subaru's notorious oiling system issues. Although the technology was pre-existing with other vehicle brands such as Porsche, Crawford Performance is the inventor of the first system specifically for Subaru. No other AOS on the market employs the same technology.

    Note: For Off-Road Use Only

    Want to know more about how an Air/Oil Separator works and why you need one? 

    Click here to check out our FAQ blog on the technology inside. 
    There you can also find a full fitment list for all current versions and kits.

    Also check out our latest technology with patent pending:
    The Crawford Performance Dual Chamber AOS (V3)

    //

  • $ 399.99
    $ 399.99
    $ 429.99

    Crawford Performance Air Oil Separator V2 - Outback XT 2007-2009

    Crawford Performance Air Oil Separator: The Subaru Original

    • Not a Catch Can - Closed Loop and Maintenance Free

    • Consume Less Oil

    • Extend the Life of your Engine

    • Reduce Detonation and Risk of Engine / Ringland Failure

    • Reduce Fuel Dilution and Subsequent Power Loss

    Oil pooling in your intake? Stop the oil from ever getting there with the Crawford Air Oil Separator.

    The Crawford Performance Air Oil Separator (AOS) is the original solution to Subaru's notorious oiling system issues. Although the technology was pre-existing with other vehicle brands such as Porsche, Crawford Performance is the inventor of the first system specifically for Subaru. No other AOS on the market employs the same technology.

    Note: For Off-Road Use Only 

    Want to know more about how an Air/Oil Separator works and why you need one? 

    Click here to check out our FAQ blog on the technology inside. 
    There you can also find a full fitment list for all current versions and kits.

    Also check out our latest technology with patent pending:
    The Crawford Performance Dual Chamber AOS (V3)

    //

Go to full site