Precision Works AOS Air Oil Separator - Subaru WRX 2015-2021
Air oil separator removes oil from engine ventilation system so the oil does not get into the intake system.
Key Features:

Retains OEM PCV valve
Engine performs cleaner & efficiently 
Precision CNC machined
6061 billet aluminum
High quality continental hose


Includes fittings, caps, and zip ties


Wrinkle red finish

Designed to work with the following Subaru:

Subaru WRX 2015-2021 

Air Oil Separator (AOS) Features:

Compact Cast Aluminum Design
1 Liter Holding Capacity
Integrated ORB Ports
Aluminum Body is powder coated in Red Wrinkle Finish
Three -8 ORB removable billet hose barbs

Now available in Red or Black!