Perrin Air Oil Separator Stock TMIC (Various Colors) 2008-2014 WRX / 2008-2021 STI

The PERRIN Performance Air Oil Separator traps oil from the crank case vents before it enters the intake, thus increasing intercooler efficiency and reduces chances of performance-robbing detonation.

DETAILS:

• Traps oil from the crankcase ventilation before it enters the intake system
• Reduces the chances of detonation
• Increases intercooler efficiency by reducing the amount of oil deposited into your intercooler and intake system
• Reduces carbon buildup in the combustion chamber, intake valves, and intake tract
• NOT a catch can system
• Separates engine oil from water vapors and allows the oil to drain back into the engine
• Oil entering from the crankcase vents spins counterclockwise through the entire body of the AOS that passes along 4 walls equalling 50.25 square inches of surface area
• Multiple baffle walls in the compact design simulate the surface area of an AOS that is 13.5" tall
• Comes provided with all necessary hoses and hose fittings
• Can comes with a red powder-coated finish
• All hardware, brackets, fittings, and clamps are included to make this AOS system ready for the installation