IAG Performance IAG Air / Oil Separator (AOS) Street to Competition Series Conversion Kit

The IAG AOS conversion kit is designed to switch the upper breather portion of the Street Series AOS to the Competition Series AOS in the 2006-14 Subaru WRX and 2004-21 STI. The kit includes the new billet aluminum Competition Series Single breather port, replacement breather o-ring, breather discharge hose, NPT plug, (x2) rubber caps and zip ties.