Exclusive Subimods Color way! In collaboration with IAG we are excited to offer a unique selection of colors for the V3 AOS! Here you are looking at the Hyper Teal offering which is a well balanced sea foam blue with hints of green which will accent your engine bay nicely!
The IAG Air / Oil Separator (AOS) is a precision-engineered upgrade for your Subaru, designed to provide unmatched protection for 2015–2021 WRX and 2014–2018 Forester XT 2.0L FA engines. Developed through years of rigorous testing on both standard and competitive applications, the IAG AOS enhances crankcase ventilation and prevents oil from entering the intake, safeguarding your engine from premature wear, detonation, and performance loss.
At the heart of the design is a 1-liter cast aluminum swirl pot canister, featuring an intelligent baffle system that separates oil from PCV gases before safely returning it to the crankcase. Unlike traditional catch cans, the IAG AOS requires no routine draining—the oil gradually collects along the canister walls and drains back into the engine, while a proprietary heating system prevents condensation and sludge buildup.
The IAG AOS integrates seamlessly with the OEM PCV system, retaining intake manifold vacuum benefits while increasing capacity. In ethanol-fueled applications, it prevents oil dilution by capturing fuel vapors and reintroducing them for combustion. Lightweight yet durable, the aluminum housing reduces overall weight compared to previous designs, making it ideal for both street and track use.
Installation is simple with the included custom-length SAE Quick Connection lines, ensuring a secure, leak-free fit. Once installed, the IAG AOS delivers a polished, factory-like appearance that complements your Subaru’s engine bay.
Features:
True 360 Degree Rotating Breather Port
Dual Breather Ports
Greater Pressure Stream Oil Separation
Compact Cast Aluminum Design
Approximate 1 Liter Holding Capacity
Aluminum Body is finished in powdercoat
Unique Baffling Controls Crankcase Pressure
Returns Oil To The Engine
No Maintenance or Manual Draining Required
Includes all fitting required for installation
Includes unique billet aluminum coolant swivel fittings
This item was delivered quickly and is awesome! I finally got it installed after a little effort to get it under my strut bar, but it fits! It looks great also! Thanks Subimods!
Paul,
Thank you for your 5 Star Review. We are thrilled to hear that you are enjoying your new IAG Performance Limited Edition V3 Street Series Air / Oil Separator. We apologize for any difficulty you may have had during installation, but we were glad to hear it fits and looks great. Thank you for choosing Subimods and happy driving!
Regards,
M
MARC PONCE
Great product
Works great and looks awesome with my color concept.
Mr. M.P
Thank you for your 5 Star Review of the IAG Performance Limited Edition V3 Street Series Air/Oil Separator (AOS) in Hyper Teal for the 2015-2021 WRX. We are thrilled to hear that our product not only functions effectively, but also complements your WRX's color concept. Your satisfaction is our priority, and we are committed to providing high-quality products that enhance both performance and aesthetics. Thank you for choosing Subimods and the IAG AOS to optimize your vehicle's performance and style!
Regards,
J
Joseph Rodrigues
Great look and product
Really good quality, I don’t know much about the install as I paid a shop to do it.
Joe,
The IAG Performance Limited Edition V3 Street Series AOS is one of the best mods you can make to your WRX! It is a fantastic way to protect the longevity of your engine! Thank you for your 5 Star Review! Enjoy the added protection!
Regards,
W
Will Richard
MUST HAVE
Purchased IAG AOS in Hyper Teal, and I reached out for support on how soon I would be recieving it due to me having a bunch of stuff installed on car that following upcoming weekend. 5 Stars for customer service & I received less than 2 days after i purchased. The IAG Performance limited Edition V3 AOS is a must have for these cars. Recommend anyone to buy this with your color of choice Thanks! Subiemods!
Will,
I couldn't agree more that the IAG AOS is a must have! I have one installed on my car as well! They make a super high quality part that is extremely effective. Thank you for the kind words and the 5 Star Review!
Regards,
J
Joaquin Rubio
She’s flashy love how it sits in the engine bay
Joaquin,
Thank you for the 5 Star Review! The Hyper Teal is such a great color and as you say really does pop in the engine bay! On top of that the IAG AOS is such a great product! Enjoy!
