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IAG Performance Air / Oil Separator (AOS) Competition to Street Series Conversion Kit For 2015-16 WRX


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The IAG AOS conversion kit is designed to switch the upper breather portion of the Competition Series AOS to the Street Series AOS on the 2015-17 Subaru WRX. The kit includes the new billet aluminum Street Series double breather, Street Series vent hose assembly, 3/8" hose with Breather fitting and PCV valve, 90-degree fitting, and associated hardware.

*This kit is used to convert vehicles with part# IAG-ENG-7252 to part# IAG-ENG-7152

**It also can be used to convert vehicles with obsolete part# IAG-ENG-7201 to part# IAG-ENG-7101.


(x1) IAG Street Series Air Oil Separator Upper Breather Port

(x1) Upper Breather Port O-Ring

(x1) M4 x 8mm socket head screw

(x1) Street Series Vent Hose Assembly (5/8 inch hose to Y fitting to (x2) 1/2 inch hoses)

(x1) 3/8 inch hose with integrated PCV valve and breather fitting (21 inch)

(x8) 8 inch zip ties

(x1) 3/8 inch 90 degree barb fitting

This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to