COBB Air/Oil Separator for 02-07 WRX / 04-07 STi (811615) Wheel Mate The part number has changed

The part number has changed or been superseded many times over the years

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or you can upgrade to an 18 PSI TiAL MVI actuator

Please allow 4-5 weeks for fabrication

COBB Air/Oil Separator for 02-07 WRX / 04-07 STi (811615) Wheel Mate The part number has changedThe COBB Air Oil Separator or AOS for 2006 2007 WRX and 2004 2007 STi is placed within your crankcase ventilation system and helps to prevent oil vapors from being introduced into the intake system. Can be installed on 02 05 WRX with modification. Vehicle Fitment: 2006 2007 Subaru WRX 2004 2007 Subaru STi For 2002 2005 Subaru WRX: This AOS can be installed with modification to or relocation of the Cruise Control Module. Shipping Times: Generally ships