GrimmSpeed Air Oil Separator Black 2002-2007 WRX / 2004-2021 STI / 2004-2008 Forester XT YMM_2000_Impreza with an overboost shutdown to

with an overboost shutdown to keep your motor safe from harm

AEM Cold Air Intake Polished 2004-2007 STI / 2006-2007 WRX | Performance Enhancement | Intake System

recirculate it back into the intake

the Invidia Q300 offers performance and style in one package

Adjustable Ride Height: Fine-tune your stance for a aggressive look or optimal clearance without sacrificing ride quality

GrimmSpeed Air Oil Separator Black 2002-2007 WRX / 2004-2021 STI / 2004-2008 Forester XT YMM_2000_Impreza with an overboost shutdown toImprove your Subarus performance and reliability with the GrimmSpeed Air Oil Separator, designed specifically for 2002 2007 WRX, 2004 2021 WRX STI, and 2004 2008 Forester XT models. This premium AOS prevents oil contamination in your intake system, ensuring cleaner combustion, better fuel efficiency, and reduced engine knock risk. Unlike traditional catch cans, it retains the factory PCV system and requires no draining or mesh media, making