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GrimmSpeed Air Oil Separator Black 2002-2007 WRX / 2004-2021 STI

SKU 078006
Original price $299.00 - Original price $299.00
Original price
$299.00
$299.00 - $299.00
Current price $299.00

An Air/Oil (AOS) Separator has one job, remove the oil from the engine ventilation system so the oil does not get sent through the intake system. The GrimmSpeed AOS has a unique patent pending design that allows you to maintain your PCV Valve while separating the oil out of the crankcase and head ventilation air! Removing oil out of your intake system will result in a more efficient engine. An Air Oil Separator takes the place of an oil catch can or tank, resulting in you not having to empty your oil catch can. As well as being very subtle and not noticeable. Another benefit to this unique design is the compact and clean look; making this ideal for someone who wants to keep it looking stock under the hood.

Customer Reviews

Based on 1 review
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J
J Davis
Easy to install

Super easy to install. The blue matched my WRX well

James,

The simple yet effective design of the GrimmSpeed AOS ensures engine reliability by removing the oil from the engine ventilation so that it does not go back into your intake system! You never have to empty this AOS unlike a catch can and the unique design is slick and clean! We appreciate your 5 Star Review!

Regards,

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