COBB Air Oil Separator Subaru WRX 2006-2007, STI 2004-2007, FXT 2004-2008

The COBB Air/Oil Separator is placed within your Subarus crankcase ventilation system and helps to prevent oil vapors from being introduced into the intake system. The COBB Air Oil Separator has been developed in partnership with IAG Performance and offers exclusive features.

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.

• 1 Liter Holding Capacity
• Integrated ORB Ports
• Compact Cast Aluminum Body w/ Black Powdercoat Finish
• Heat Shielding on Crankcase Breather and Oil Return Lines
• Coolant Bleeder Valve
• Bespoke COBB Color Combination
• Laser Etched COBB Logo

Note: This AOS can be installed to 2002-2005 WRXs with modification to or relocation of the Cruise Control Module.

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