Part Number: PSP-ENG-605

Description: Air Oil Separator

Color: Available Black or Red

Fitment: 02-07 Subaru WRX & STI w/TMIC

Notes: Not for sale or street use in CA & CARB states.

Details:

The PERRIN Air Oil Separator traps oil from the crank case vents before it enters the intake, reduces carbon build-up, increases intercooler efficiency, which reduces the chance of performance-robbing detonation.