IAG Street Air Oil Separator AOS Subaru WRX 08-14 / STI 08-21 / Forester XT 09-13 | IAG-ENG-7186

Rated 5.0 out of 5
Based on 16 reviews
IAG
SKU: IAG-ENG-7186RD
Availability: Out Of Stock
Type: Engine Air Oil Separator
Regular price
$439.99
Regular price
$439.99
Sale price
$439.99
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Subtotal: $439.99

Delivery Options:

  • Economy $4.97
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Next Day Delivery Eligibility
  • Order in-stock items before 3:30 PM EST with 'Fastest' delivery for next-day arrival.
  • Orders from Friday to Sunday arrive by the following Tuesday.

Delays can happen. Contact us if your order doesn't arrive on time for a $20 credit on your next purchase. Minimum order must be $99

Fitment Information:

2008-2014 Subaru WRX

2008-2021 Subaru STI

2005-2009 Subaru Legacy GT

2009-2013 Subaru Forester XT

SAFEGUARD YOUR SUBARU

The IAG Performance Air/Oil Separator (AOS) is a valuable investment to protect and maintain peak performance in your Subaru. Developed through years of meticulous testing on standard and competitive applications, the design of the AOS offers unparalleled protection for your engine. This AOS features a 1-liter swirl pot canister made of cast aluminum. This construction significantly enhances the separation of oil from the PCV system before the PCV gasses are directed back to the intake system.The Air Oil Separator features an aluminum housing that has superior ventilation, and it incorporates an exclusive baffle design that sets it apart from the competition. It works with all fuel types, prolongs engine lifespan, optimizes crankcase ventilation, and seamlessly integrates with standard ECU settings, so no tuning is required.

SAE QUICK CONNECTION LINES

IAG’s Air Oil Separator includes a full set of custom length SAE Quick Connection lines that not only simplify the installation of the AOS system, but they also reduce the chance of leakage because they offer a more reliable and secure connection than basic hose clamps. Once installed, this AOS system has a clean, factory-look that integrates seamlessly with your Subaru’s engine.

AOS in the Box:

  • Ready to Install
  • Hardware, Lines & Fittings Included
  • The AOS arrives completely assembled and ready for immediate installation. However, the entire unit can be broken down for cleaning. With a single allen wrench, you can remove two bolts and the AOS easily separates into individual pieces.

 Features:

  • Keep oil out of the intake
  • Improves the OEM PCV system with new check valve
  • Minimizes condensation build up


average rating 5.0 out of 5
Based on 16 reviews
  • 5 Stars
    16 Reviews
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Customer photos and videos
Review posted
Reviewed by Stephen S.
Verified Buyer
Rated 5 out of 5

Great quality parts

The aos is a nice addition to the engine bay and safety measure for the vehicle. I didn’t have any oil issues prior to installing it so I cannot relay any info on its performance yet. The installation overall was pretty straight forward. My biggest issue was connecting the supplied 2 inch hose with the Y fitting onto the motor with the pinch clamp installed. I literally struggled with this for hours eventually using the oem 2in hose with the clamps still installed. Everything else went smooth. Have hose cutters, hose clamp pliers, hose pinch off pliers. Make sure all hoses are always routed with a downward slope and make sure nothing is pinched once the intercooler is back on if you have one.

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Reviewed by Robert S.
Verified Buyer
Rated 5 out of 5

Wish I did it sooner

Instructions are a little iffy but good product

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Reviewed by Abraham H.
Verified Buyer
Rated 5 out of 5

IAG V3 Review

Premium quality parts. Only hiccup is the difference in amount of PCV connectors depending on specific year but if you shoot them a message you can get your problem solved quick!

https://www.youtube.com/watch?v=3k_cmx1es7M

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Reviewed by Tyler K.
Verified Buyer
Rated 5 out of 5

AOS

Lots of recommendations to run an AOS with the turbocharged boxer motors so I got this for my STI. Installing was pretty easy, except for the 5/8” Y hose that attaches to the block. Hope this helps the Subaru run strong for years to come!

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Reviewed by Seann S.
Verified Buyer
Rated 5 out of 5

Beautiful

Absolutely beautiful in the quality of this kit. I'm happy that I'll get to enjoy all of the benefits from an early engine life. Super detailed instructions.

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Reviewed by Keenen W.
Verified Buyer
Rated 5 out of 5

Smooth

It has a nice clean finish

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Reviewed by General W.
Verified Buyer
Rated 5 out of 5

Great/must have👍🏾👍🏾👍🏾👍🏾👍🏾

This is a must have for your Subaru, it does the job and keeps all that nasty oil out of your intake manifold and other places 👍🏾👍🏾👍🏾👍🏾👍🏾

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Reviewed by Matthew L.
Verified Buyer
Rated 5 out of 5

IAG AOS

Everything came in the box, used IAG video to install on my 21 STI. The red looks sweet in the engine bay!! Took me about 6 hours on a Saturday afternoon. Do not rush this install it can be very confusing at times and measure twice, cut once on the hoses!

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Reviewed by Leo M.
Verified Buyer
Rated 5 out of 5

Easy Installation

Not much to say about this product yet as it was just installed, but will keep a close eye on performance over then next 6-7 months. Overall the installation was relatively easy. There's plenty of videos out there on how to install. Only recommendation I would have is get a pair of hose pinch pliers and some long hose clamp pliers and it makes the installation even easier.

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Reviewed by Ryan I.
Verified Buyer
Rated 5 out of 5

Great product

Easy install and a good quality AOS. Looks good in the engine bay too.

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