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.
- Retains OEM PCV valve
- Engine performs cleaner & efficiently
- Precision CNC machined
- 6061 billet aluminum
- High quality continental hose
- Includes fittings, caps, and zip ties
Designed to work with the following Subaru:
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!