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COBB Tuning Air Oil Separator Black/Red - Subaru STi 2004-2007 / WRX 2006-2007
COBB Tuning Air Oil Separator Black/Red - Subaru STi 2004-2007 / WRX 2006-2007
COBB Tuning Air Oil Separator Black/Red - Subaru STi 2004-2007 / WRX 2006-2007
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User Media for: COBB Tuning Air Oil Separator Black/Red - Subaru STi 2004-2007 / WRX 2006-2007

COBB Tuning Air Oil Separator Black/Red

Subaru STi 2004-2007 / WRX 2006-2007

Features & Product Details

RallySport Direct is always proud to carry quality automotive performance products brought to you by COBB Tuning. 

On this page, you are looking at the COBB Tuning Air/Oil Separator that has been designed to prevent oil and vapors from entering your intake manifold. This design installs in your crankcase ventilation system and prevents buildup on your valves which can certainly have an effect on your performance. 

Here are the details:

  • Billet aluminum tank design
  • Bespoke COBB anodizing on caps
  • Wrinkle black powder-coated canister
  • Laser etched COBB logo
  • Developed in partnership with IAG Performance
  • 4" OD and a 5.75" height
  • Heat shielding on crankcase breather and oil return lines
  • Coolant bleeder valve
  • Port connections from the AOS to the cylinder head and to the top of the block
  • Bottom of the canister is shaped like a snail which redirects positive crank pressure into the same swirl pattern produced by the 3 side ports which allows for maximum oil drainage while separating oil from the air in all of the venting ports
  • The back plate of the AOS features a unique coolant routing system that heats the entire AOS to the same temperature of the engine which maximizes the evaporation of any water collecting inside of the can 
  • All hoses, fittings, hardware, and brackets are included making this air/oil separator system ready for the installation. 

    Specifications

    Brand: COBB Tuning
    Color: Black
    Hoses Included: Yes
    Installation Hardware Included: Yes
    Material: Aluminum
    Mfgr. Warranty: 1 Year
    Condition: New Product
    Return Policy:
    RallySport Guarantee
    WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

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    REVIEWS & CUSTOMER MEDIA

    1 Reviews
    5 out of 5 Stars
    5 Stars
    (1)
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    Customer Photos and Videos
    COBB Tuning Air Oil Separator Black/Red ( Part Number: 811600)
    Cobb AOS 3 years ago
    5out of 5stars

    Great quality AOS, have had it on now for about 3 months working great! Definitely take your time installing it and read ALL the directions completely on the IAG website, its a pretty easy install as long as you take your time and fallow the instructions, took me the better half of 3 hours to install it in my driveway. This is and IAG AOS just with a Cobb logo and styling! Very nice take your time. I did not have to move or bend my brake lines
      
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    QUESTIONS & ANSWERS

    • Q: Air cooled turbo  bbostock18095612 years ago

      Where would be an alternative location to hook the lower coolant line to if my turbo is air cooled and not coolant cooled?
    • Q: Cobb aos fitment   BoostedScoobi3 years ago

      Hello I have 2002 Subaru Impreza wrx and I was looking to get the cobb aos I was looking on cobbs website and they don’t say it fits my model but on here it says it will fit the 02 is this correct??
      • 1 of 1 people found the following answer helpful

        A:  Unfortunately, it looks like we do have have the wrong fitment listed on our website, we will get this fixed soon and we appreciate you bringing it to our attention!

        Devan M. @ RallySport Direct 3 years ago  
          
        Was this answer helpful?
    • Q: Cobb aos fitment   BoostedScoobi3 years ago

      Hello I was looking at your Cobb aos and it says it fits my 02 Subaru Impreza wrx but when I went to look it up on Cobb’s website it says it doesn’t fit with this model?
      • 0 of 0 people found the following answer helpful

        A:  Unfortunately, it looks like we do have have the wrong fitment listed on our website, we will get this fixed soon and we appreciate you bringing it to our attention!

        Devan M. @ RallySport Direct 3 years ago  
          
        Was this answer helpful?
    • Q: Replacement Hoses  Matt3 years ago

      Where can I get a replacement hose for this set-up?