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 2006-14 Subaru WRX and 2004-18 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.

Includes:
(x1) IAG Street Series Air Oil Separator Upper Breather Port
(x1) Upper Breather Port O-Ring
(x1) M4 x 8mm socket head screw
(x1) 1/2 inch hose (39 inch length)
(x1) 3/8 inch hose (27 inch length) with PCV valve and breather fitting
(x1) 1/2 inch straight barb union fitting
(x2) 90 degree 1/2 inch fitting
(x10) 8 inch zip ties
(x1) 11 inch zip tie
(x1) 5/8 inch vinyl cap
(x1) 5/8 inch to 1/2 inch straight barb union with 2 inch of 5/8 inch hose

*This kit converts vehicles with part# IAG-ENG-7251 to IAG-ENG-7151
*This kit converts vehicles with part# IAG-ENG-7250 to IAG-ENG-7150