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Ships within 48 hours · Estimated delivery Aug 29 - Sep 3
Included Shims for Orientation
Digital laser measurements of interior surfaces offer a consistently perfect fit
rolling motion of the body will be reduced during compression giving you the benefit of more direct handling and confidence while driving
Grooves in the bushing ensure grease stays where it needs to be and prevents creaking after extended use
Fits 2008-2018 Subaru WRX and 2008-2017 STI
Grimmspeed Air Oil Separator (Blue) - Subaru STI VA 0w40 Included Shims for OrientationFits 2015+ Subaru STI An Air Oil 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 is unique as it allows you to maintain your PCV Valve while separating the oil out of the crankcase and head ventilation air! Our AOS will allow your engine to run more efficiently due to the separation of oil from the intake system. When there is oil in your system, the
