Perrin - Subaru 02-07 WRX/STI - Air Oil Separator (Red) subaru-ascent-2024 the ANTI-ROLL-KIT comes complete with

the ANTI-ROLL-KIT comes complete with all mounting hardware

Group 24 OEM Automotive Case size (directly replace stock battery)

Our ANTI-ROLL-KITs reduce body roll through increased design stiffness over stock bars

Custom WRX/Legacy fitment compressor housing

where it gets the most amount of airflow

Perrin - Subaru 02-07 WRX/STI - Air Oil Separator (Red) subaru-ascent-2024 the ANTI-ROLL-KIT comes complete withOVERVIEW 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