Perrin Air Oil Separator AOS KitNote: This is a very involved installation and requires removal of the alternator and breaking modifying some OEM components. See installation guide below for more information. We recommend this to be performance by professionals only. The PERRIN Air Oil Separator prevents oil from entering the intake by capturing it from the crankcase vents. This reduces carbon build up, improves intercooler efficiency, and lowers the risk of performance degrading
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