Perrin Air Oil Separator for TMIC Red WRX (2008-2014) STI (2008-2018) Scion - Platinum-coated stainless steel catalysts

- Platinum-coated stainless steel catalysts (not cheap inadequate ceramic-based cats that can fail quickly)

SPEC's Stage 2+ features a multi-friction disc in a full faced configuration with carbon semi-metallic on one side and Kevlar on the other

- Recommended for high horsepower street or race use

2015+ Subaru WRX/STI 18x9

By replacing them with these harder Whiteline units you are able to get rid of the unwanted slop and flexing of the stock units

Perrin Air Oil Separator for TMIC Red WRX (2008-2014) STI (2008-2018) Scion - Platinum-coated stainless steel catalystsPerrin Air Oil Separators for the WRX STI are a great product if you want to increase your intercooler efficiency and stopping oil from entering the intake. By reducing the amount of oil that is entering the intercooler and intake system you will have a cleaner more efficient motor and less engine damaging detonation. The Air Oil separator is a great item to have on highly used daily driven cars or complete race cars. Black or red the AOS are a clean