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Perrin 02-07 Subaru WRX/STI Air Oil Seperator


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The PERRIN Air Oil Separator traps oil from the crank case vents before it enters the intake, reduces carbon build-up, increases intercooler efficiency, which reduces the chance of performance-robbing detonation.


(1) PERRIN Air Oil Separator

(1) Car Specific Bracket

(1) PERRIN License Plate Frame

All necessary hardware

Warranty, instructions, stickers


This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to

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