Perrin - Subaru 08-14 WRX/STI - Air Oil Separator (Neon Yellow) subaru-ascent-2020 The PERRIN Pitch Stop Mount's

The PERRIN Pitch Stop Mount's body is machined from 6061 billet aluminum and features a combination of 95a front and 70a rear durometer bushings

black hose fittings

Thermal Protections

Will support vehicles with up to 350 hp

Perrin - Subaru 08-14 WRX/STI - Air Oil Separator (Neon Yellow) subaru-ascent-2020 The PERRIN Pitch Stop Mount'sOVERVIEW 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