Cobb Air Oil Separator Subaru WRX 2008-2014 / STI 2008-2021 / Legacy GT 2005-2009 | 822615 Wheel Bolt Pattern_4x108 correctly the first time

correctly the first time

or driving in hot climates

High-resolution MAC electronic boost control solenoid included

KSP-CSB030-GR

The result is improved rear-end stability

Cobb Air Oil Separator Subaru WRX 2008-2014 / STI 2008-2021 / Legacy GT 2005-2009 | 822615 Wheel Bolt Pattern_4x108 correctly the first timeFitment Information: 2008 2014 Subaru WRX 2008 2021 Subaru STI 2005 2009 Subaru Legacy GT 2005 2009 Subaru Outback XT 2009 2013 Subaru Forester XT The COBB Subaru Air Oil Separator helps to prevent crankcase oil vapors from recirculating back through your engine's intake system. Oil vapors passing through your engine's intake system lower the effective octane rating of fuel and can contribute to both oil and carbon buildup over time. Features: 1 Liter