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)

A must have for any car looking to exceed 400 horsepower

STI & Legacy GT mounts are made of a softer material which can make spirited driving feel vague and sloppy

This kit is also completely rebuildable

new crank bolts

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