IAG Performance V4 Air Oil Separator AOS - Black - 2004-2007 Subaru STI / 2006-2007 WRX PDM_windshield-shades Also adds a layer of

Also adds a layer of protection to the filter from heavy dust or dirt

Verus Engineering Fuel Starvation Flapper - GT86 and WRX RallySport Direct proudly carries a great selection of quality aftermarket products that have been expertly engineered and crafted by Verus Engineering

this is not the same system as the VA generation

Extremely lightweight when compared to the OEM exhaust and competitive aftermarket exhaust systems

IAG Performance V4 Air Oil Separator AOS - Black - 2004-2007 Subaru STI / 2006-2007 WRX PDM_windshield-shades Also adds a layer ofIAG V4 Air Oil Separator AOS Black 2004 2007 Subaru STI 2006 2007 WRX Keep Oil Out of Your Intake The IAG V4 Air Oil Separator (AOS) is designed to protect and improve the performance of your 2006 2007 Subaru WRX or 2004 2007 STI by intercepting crankcase blow by oil before it reaches the intake tract. Developed after years of testing on both street and competition applications, the IAG AOS uses a 1 liter cast aluminum swirl pot canister to