Grimmspeed Air Oil Separator (Blue) - Subaru STI VA 0w40 This model has a divorced

This model has a divorced wastegate and INCLUDES a catalytic converter

This PERRIN sway bar increase stiffness by a minimum of 50% overstock

Included Shims for Orientation

Street use and light track use

The COBB Subaru Fuel Rail Line Kit is designed to be used along with the COBB Fuel Rail Kit

Grimmspeed Air Oil Separator (Blue) - Subaru STI VA 0w40 This model has a divorcedFits 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