Perrin - Subaru 15-21 WRX - Air Oil Separator Kit (Neon Yellow) subaru-forester-2003 5 psi) Using Gasoline at

5 psi) Using Gasoline at 52 Degrees C (125 Degrees F)

By removing the Fuel Damper and replacing it with this anodized black machined aluminum kit

please verify vehicle compatibility in Confirmed Applications

BOV5 Dual Port BOV

Perrin - Subaru 15-21 WRX - Air Oil Separator Kit (Neon Yellow) subaru-forester-2003 5 psi) Using Gasoline atOVERVIEW The PERRIN Air Oil Separator traps oil from the crankcase vents before it enters the intake, reduces carbon build up, increases intercooler efficiency, which reduces the chance of performance robbing detonation. NO TUNING REQUIRED Increase horsepower and torque without ECU recalibration or tune! This part is designed and tested to work safely on your vehicle without any tuning required! However, more power can be gained with proper ECU