Moroso 85655 Air Oil Separator Catch Can - Small Black Body for 04-07 Subaru STI with Front Mount Intercooler | Engine Protection & Performance Upgrade for Turbocharged Vehicles

Air-Oil Separator Kit, Catch Can, Twin Small Body, Black Finish, Subaru WRX, 2006-07, STI 2004-07, Front Mount Intercooler

General Information

*Please note May not apply to all kits

Plumbed into a vehicle's PCV system to capture the excess crankcase vapors, residual oil mist and moisture from reentering the intake tract

Vehicles from the factory vent these excess crankcase vapors, residual oil mist and moisture right back into the intake manifold which could cause detonation, oil deposits to form in the intake tract including the valves themselves and from lowering the efficiency of the intercooler in intercooler equipped vehicles