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This is a core-only option for those looking to increase the cooling capacity of their 2011-2014 WRX or STI in situations where piping already exists or needs to be custom-routed
BOLT M8 L=55mm （2）
providing a lifetime of service
INTERIOR MATERIAL Heat-Resistant Embedded Fibers
more torque
Perrin - Subaru 02-07 WRX/STI - Air Oil Separator (Neon Yellow) subaru-wrx-2023 This is a core-only optionOVERVIEW The PERRIN Air Oil Separator traps oil from the crankcase vents before it enters the intake, reduces carbon build up, increases intercooler efficiency, which reduces the chance of performance robbing detonation. NO TUNING REQUIRED Increase horsepower and torque without ECU recalibration or tune! This part is designed and tested to work safely on your vehicle without any tuning required! However, more power can be gained with proper ECU
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