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Perrin Air-Oil Separator - 2015-2021 WRX

SKU: PSP-ENG-609BK

This has been designed to trap oil from the crankcase vents before it enters the intake to reduce carbon buildup, reduce carbon build-up, increase intercooler efficiency, and to reduce the chance of detonation.

  • Not A Catch Can - The air oil separator separates the oil from the air while draining it back to the engine
  • Swirl Pot Technology - The multi-layer baffle design forces incoming engine blow-by to move rapidly across the baffles to separate o. . . Show More >



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