IAG Air Oil Separator AOS For 2008-14 Subaru Impreza WRX & 2008-21 STI Color:Red Part# IAG-ENG-7181RD Shortly after the heads are

Shortly after the heads are drilled to fit larger 1/2" or 14mm head studs

bored and honed to 99

cast aluminum swirl pot canister

The bare castings are visually inspected and then fixtured into our in-house Centroid 5-axis CNC Machine

THIS IS A MADE TO ORDER KIT

IAG Air Oil Separator AOS For 2008-14 Subaru Impreza WRX & 2008-21 STI Color:Red Part# IAG-ENG-7181RD Shortly after the heads areLEAD TIME 3 5 DAYS PROTECT YOUR ENGINE The IAG Performance V3 Street Series Air Oil Separator (AOS) is a worthwhile investment to safeguard and enhance the performance of your Subaru. Developed through years of testing on standard and competitive applications, the Street Series AOS design offers unmatched protection for your engine. IAGs AOS features a 1 liter cast aluminum swirl pot canister that significantly improves oil separation from the PCV