IAG V3 Street Series Air / Oil Separator (AOS) in Neon Yellow for 2006-07 Subaru Impreza WRX & 2004-07 STI. 2016-subaru-wrx sti-limited IAG's Stage 4 Cylinder Head

IAG's Stage 4 Cylinder Head Package for the 2015-20 WRX utilizes a CNC porting program for the AW20 heads which was developed over the past year and tested on the most successful high-horsepower Subarus

It is well suited for both lowered street cars as well as off-road rally cars

DBA 5000 Series XS rotors share all the same leading technology as our 4000 Series

the OEM guides are pressed out and replaced with GSC Manganese-Bronze valve guides that are shaped to improve airflow

All diaphragms endure a four-stage

IAG V3 Street Series Air / Oil Separator (AOS) in Neon Yellow for 2006-07 Subaru Impreza WRX & 2004-07 STI. 2016-subaru-wrx sti-limited IAG's Stage 4 Cylinder HeadIAG V3 Street Series AOS (Neon Yellow) 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