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

The IAG AOS conversion kit is designed to switch the upper breather portion of the V3 Competition Series AOS to the V3 Street Series AOS on the 2006-14 Subaru WRX and 2004-21 STI. The kit includes the new billet aluminum Street Series double breather, 1/2" hose, 3/8" hose with integrated PCV valve and breather fitting, 90-degree fittings, straight unions and associated hardware.