Perrin Air Oil Separator for TMIC Black WRX / STI (2002-2007) BMW NOTE: Fits the Hatchback ONLY

NOTE: Fits the Hatchback ONLY

Sound waves

Using this special surface coating provides 5 times better durability over standard galvanising

meaning that the installation of a larger rear sway bar will eliminate the grip bias and provide a more neutral handling feel

without producing harsh or overly loud overtones during regular driving

Perrin Air Oil Separator for TMIC Black WRX / STI (2002-2007) BMW NOTE: Fits the Hatchback ONLYPerrin 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