COBB Air/Oil Separator for 02-07 WRX / 04-07 STi (811615) Wheel Mate Hand fabricated in the USA

Hand fabricated in the USA

Part Number: Lug Nut Color: 31885B Black 31885C Chrome Silver 31885U Blue 31885L Purple 31885R Red

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The part number has changed or been superseded many times over the years

COBB Air/Oil Separator for 02-07 WRX / 04-07 STi (811615) Wheel Mate Hand fabricated in the USAThe 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