COBB Tuning Air Oil Separator Black/Red - 2002-2007 Subaru WRX / 2004-2007 STI Toyota-GR86-2024 adding a larger turbo with

adding a larger turbo with all the trimmings

It was developed by the aircraft industry specifically to address 304 stainless manifolds that were cracking

All of our bushings include a grease packet for your sway bar installation

the unequal length design will really promote that Subaru rumble

COBB Tuning Air Oil Separator Black/Red - 2002-2007 Subaru WRX / 2004-2007 STI Toyota-GR86-2024 adding a larger turbo withKeep Oil Out of Your Intake Charge The Cobb Air Oil Separator for the 2004 2021 Subaru STI captures the oil vapor that the factory PCV system vents back into the intake path and separates it before it reaches the turbocharger and intercooler. On a turbocharged Subaru EJ or FA engine, PCV oil vapor coats the inside of the charge pipes, intercooler core, and intake manifold with an oil film over time reducing intercooler efficiency and introducing