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GrimmSpeed Air Oil Separator Red - Subaru WRX 2002-2007 / STI 2004+
GrimmSpeed Air Oil Separator Red - Subaru WRX 2002-2007 / STI 2004+
GrimmSpeed Air Oil Separator Red - Subaru WRX 2002-2007 / STI 2004+
GrimmSpeed Air Oil Separator Red - Subaru WRX 2002-2007 / STI 2004+
GrimmSpeed Air Oil Separator Red - Subaru WRX 2002-2007 / STI 2004+
GrimmSpeed Air Oil Separator Red - Subaru WRX 2002-2007 / STI 2004+
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User Media for: GrimmSpeed Air Oil Separator Red - Subaru WRX 2002-2007 / STI 2004+
User Media for: GrimmSpeed Air Oil Separator Red - Subaru WRX 2002-2007 / STI 2004+
User Media for: GrimmSpeed Air Oil Separator Red - Subaru WRX 2002-2007 / STI 2004+
User Media for: GrimmSpeed Air Oil Separator Red - Subaru WRX 2002-2007 / STI 2004+
User Media for: GrimmSpeed Air Oil Separator Red - Subaru WRX 2002-2007 / STI 2004+
User Media for: GrimmSpeed Air Oil Separator Red - Subaru WRX 2002-2007 / STI 2004+
User Media for: GrimmSpeed Air Oil Separator Red - Subaru WRX 2002-2007 / STI 2004+
User Media for: GrimmSpeed Air Oil Separator Red - Subaru WRX 2002-2007 / STI 2004+
User Media for: GrimmSpeed Air Oil Separator Red - Subaru WRX 2002-2007 / STI 2004+
User Media for: GrimmSpeed Air Oil Separator Red - Subaru WRX 2002-2007 / STI 2004+
User Media for: GrimmSpeed Air Oil Separator Red - Subaru WRX 2002-2007 / STI 2004+
User Media for: GrimmSpeed Air Oil Separator Red - Subaru WRX 2002-2007 / STI 2004+

GrimmSpeed Air Oil Separator Red

Subaru WRX 2002-2007 / STI 2004+

$299.00

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Features & Product Details

RallySport Direct proudly carries a great selection of quality aftermarket performance products brought to you by GrimmSpeed. 

 

This is the GrimmSpeed Air Oil Separator. If you're familiar with modifying your vehicle, then you will know the importance of an air/oil separator, especially in a boxer-designed engine. The GrimmSpeed example comes with a unique design as it utilizes the factory oil filler cap location to maintain your PCV system while separating the harmful oil and vapors from the crankcase, as well as the head ventilation system. This will prevent oil from coating the intake manifold which will make can make its way onto the valves which will affect the octane rating which leads to detonation issues and performance issues. 

 

 

DETAILS:

  • Anodized red finish option with white GrimmSpeed logo
  • The unique design utilizes the factory oil filler cap location to maintain your PCV system
  • Prevents harmful oil and oil vapors from entering the crankcase and head ventilation system
  • Prevents the reduction of fuel octane
  • Prevents the higher chances of engine knock and detonation
  • Prevents worse emissions 
  • Prevents higher oil consumption 
  • Very compact design
  • Coalesces oil without using a mesh media which can cause contaminants to collect and cause a sludge buildup
  • The design eliminates the need to check/empty your catch can while refilling your oil 
  • Includes all of the required fittings
  • Includes hose that is cut to specific lengths and zip ties
  • Product Video

    Specifications

    Brand: GrimmSpeed
    Color: Red
    Installation Hardware Included: Yes
    Material: Aluminum
    Mfgr. Warranty: Lifetime
    Condition: New Product
    Return Policy:
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    PEOPLE WHO VIEWED THIS ITEM ALSO VIEWED

    REVIEWS & CUSTOMER MEDIA

    29 Reviews
    4.5 out of 5 Stars
    5 Stars
    (23)
    4 Stars
    (1)
    3 Stars
    (3)
    2 Stars
    (1)
    1 Stars
    (1)
    Customer Photos and Videos
    GrimmSpeed Air Oil Separator Red ( Part Number: 078006R)
    GrimmSpeed Air Oil Separator Red ( Part Number: 078006R)
    GrimmSpeed Air Oil Separator Red ( Part Number: 078006R)
    GrimmSpeed Air Oil Separator Red ( Part Number: 078006R)
    GrimmSpeed Air Oil Separator Red ( Part Number: 078006R)
    GrimmSpeed Air Oil Separator Red ( Part Number: 078006R)
    GrimmSpeed Air Oil Separator Red ( Part Number: 078006R)
    GrimmSpeed Air Oil Separator Red ( Part Number: 078006R)
    GrimmSpeed Air Oil Separator Red ( Part Number: 078006R)
    GrimmSpeed Air Oil Separator Red ( Part Number: 078006R)
    GrimmSpeed Air Oil Separator Red ( Part Number: 078006R)
    GrimmSpeed Air Oil Separator Red ( Part Number: 078006R)
    Best bang for buck AOS 3 years ago
    5out of 5stars
    All that Grimmspeed!
    This is the second STI I’ve used these on and I love how maintenance free they are! I did find oil in my Intercooler from not having one, so this is by far the best and easiest engine mod you can get. Plus it comes from Grimmspeed so you know the quality is outstanding.
      
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    3 Month Review Update 4 years ago
    5out of 5stars
    oooshytgottem
    I am very satisfied with this GS AOS. I checked my oil 3 months after the install and it was still visible on my dipstick. I usually have to add 2 quarts after the first first month of driving and i didn't have to! This has help with my oil consumption greatly and no longer have oil being mixed in with air and fuel in my cylinders under WOT!
      
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    Well needed upgrade to PCV system 4 years ago
    5out of 5stars
    oooshytgottem
    I have a rebuilt motor with forged internals on my 2003 WRX and had a lot of blow by and thought it was my turbo. After installing this and taking it for a drive I've notice smoother acceleration and a more stable idle and no more smoke visible under hard acceleration!
      
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    Grimmspeed air oil separator  4 years ago
    3out of 5stars
    Etick performances
    Like the quality of the product and all the hardware is there ready to install. But the thing I didn't like is that it doesn't come with instructions for installing it comparar to perrin oil catch can
      
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    Bling with purpose 5 years ago
    5out of 5stars
    07WRX
    The AOS was easy to install, integrates well, and is well engineered.
      
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    QUESTIONS & ANSWERS

    • Q: Grimm speed AOS  Mason Herr2 years ago

      I was wondering if this AOS would be comparable to IAG's AOS. Like how does the air get separated from the oil in the blow by if there is no 'filter' to catch it?
      • 0 of 0 people found the following answer helpful

        A:  it's comparable in that they both try to do the same function. This one is much simpler and easier to install but not as effective as the IAG is at removing oil from the intake. So normally I would say this is a perfect unit for normal to semi-aggressive street driving, or a low to mid power build, where the IAG would be more idea for a big power build, or an aggressive street car, track car. Hope this helps :)

        Rick C. @ RallySport Direct 2 years ago  
          
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    • Q: grimmspeed AOS  Murph2 years ago

      How does the AOS stay secured in the filler tube?
    • Q: 2004 forester xt   monty48483 years ago

      With the gs aos does it replace the stock pcv valve or do I need to connect this off of the pcv valve?
    • Q: Power  JimmyAdeux5 years ago

      Is there a maximum power this AOS can hold? Example; 20psi, 340whp
      • 1 of 1 people found the following answer helpful

        A:  Performance isn't dictated by a certain PSI, rather how much blow-by the motor has. If the engine is healthy and not a lot of blow-by is making it past the piston rings, then the AOS will function properly. If on the other hand a lot of blow-by is making it through, then the unit won't be able to separate the air/oil mixture quickly enough and you'll find oil getting in your car's intake tract.

        Jared A. @ RallySport Direct 5 years ago  
          
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