IAG Performance V3 Street Series Air / Oil Separator (AOS) for 2006-07 Subaru Impreza WRX & 2004-07 STI. 2012-subaru-impreza-wrx Keeps oil out of your

Keeps oil out of your intake for improved performance

Brian Crower H-Beam rods with ARP2000 rod bolts are utilized along with King or ACL rod bearings

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

By smoothing and blending this area under the valve seat

IAG Performance V3 Street Series Air / Oil Separator (AOS) for 2006-07 Subaru Impreza WRX & 2004-07 STI. 2012-subaru-impreza-wrx Keeps oil out of yourIAG V3 Street Series AOS (Black) The IAG Performance V3 Street Series Air Oil separator (AOS) is an excellent investment to keep your Subaru vehicle running well. The Street Series AOS maintains OEM PCV system functionality, but supplements its capacity. The Street Series AOS design is based on years of extensive testing on standard and competition applications. The Street Series AOS' large, 1 liter, cast aluminum swirl pot canister more effectively