Perrin Air Oil Separator Red w/ TMIC

• 2004-2007 Subaru | WRX STI
• 2002–2007 Subaru | WRX

The Perrin Air Oil Separator for 2002-2007 WRX and STI with a top-mount intercooler increases intercooler efficiency by reducing the amount of oil deposited into the intercooler and intake system. As blow-by oil builds up inside the intercooler, the less efficient it becomes due to less heat being transferred away from the engine, leading to power loss and detonation. The AOS also reduces carbon buildup in the combustion chamber, intake valves, and intake tract. The base plate of the AOS is heated by coolant drawn from the engine, decreasing water condensation and nearly eliminating the sludge buildup common in other AOS bodies.

• Separates oil from crankcase blow-by before it enters the intake
• Reduces chances of performance-robbing detonation
• Reduces carbon buildup in the combustion chamber, intake valves, and intake tract
• Coolant-heated base plate minimizes sludge buildup and cleaning
• Designed for vehicles with the factory-style top-mount intercooler (TMIC)
• 2002-2005 WRX installation requires removal of the cruise control module
• Red powder-coated finish

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