Precision Works AOS Air-Oil Separator for Subaru WRX (2002–2014) and STI (2004–2021)

Description

Precision Works AOS Air Oil Separator – Subaru WRX 02-07 STi 04-19

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
Designed to work with the following Subaru:

Subaru WRX 02-07
Subaru STi 04-19

Explore more from our collection.