Perrin Black Air Oil Separator Subaru WRX 2002-2014 / STI 2004-2021 w/ FMIC | PSP-ENG-607BK Perrin

Fitment Information:

2002-2014 Subaru WRX w/ Front Mount Intercooler

2004-2021 Subaru STI w/ Front Mount Intercooler

2005-2009 Subaru Legacy GT w/ Front Mount Intercooler

2005-2009 Subaru Outback XT w/ Front Mount Intercooler

Features:

• Reduces the chances of detonation
• Traps oil from the crankcase ventilation before it enters the intake system
• Increases intercooler efficiency by reducing the amount of oil deposited into your intercooler and intake system
• Reduces carbon buildup in the combustion chamber, intake valves, and intake tract
• Separates engine oil from water vapors and allows the oil to drain back into the engine
• Durable Wrinke Black Powder Coating
• Difficult Installation Effort
• Estimated Installation Time – 3 Hours
• Installation Instructions
• No Tuning Required

What’s in the Box:

• (1) PERRIN Air Oil Separator
• (1) Car Specific Bracket
• (1) PERRIN License Plate Frame
• All necessary hardware for installation
• Warranty & Instructions

As blow-by/oil builds up inside your intercooler, the less efficient it becomes due to less heat being transferred away from your engine. This leads to power loss and detonation, which can be damaging to your engine. The AOS will reduce carbon build up in the combustion chamber, intake valves, and in your intake tract. The crank case blow-by is recirculated back to the intake to be ingested by the engine, but in doing so, gets stuck in the intake tract, intake valves, and the intercooler. This builds up over time which causes a loss in power and extra wear and tear on your valve train.