DETAILS
Perrin Air Oil Separator Black 2002-2021 WRX / 2004-2021 STi | Ceramic-Coated CNC Machined | Engine Health Component Overview The Perrin Air Oil Separator (AOS) is designed to efficiently remove oil vapors from the crankcase gases before they enter the intake manifold on Subaru WRX and WRX STI models from 2002 through 2021. By capturing these oil vapors, the AOS helps prevent carbon buildup inside the intake tract, which is a common issue that can degrade engine performance and longevity. This product is ideal for Subaru enthusiasts looking to maintain engine cleanliness and improve overall reliability, especially those running modified or high-mileage engines. Engineered with precision, the Perrin AOS features a ceramic-coated, CNC-machined aluminum body that ensures durability and corrosion resistance. The ceramic coating not only protects the unit but also aids in reducing oil adhesion inside the separator, enhancing its efficiency. Perrin’s design philosophy focuses on combining robust construction with functional performance, making this AOS a standout choice for Subaru owners who demand quality and reliability from their engine components. Installing the Perrin Air Oil Separator offers tangible benefits such as reduced intake manifold contamination, improved throttle response, and potentially longer engine life by minimizing harmful oil vapor ingestion. For Subaru WRX and STI owners, this means a cleaner running engine with less frequent intake cleaning intervals, supporting both daily driving and spirited performance use. Features & Specifications This Perrin Air Oil Separator is engineered specifically for Subaru WRX and WRX STI models from 2002 to 2021 and features a ceramic-coated, CNC-machined aluminum construction. Designed to reduce carbon buildup and improve engine health, it delivers reliable crankcase ventilation management for Subaru enthusiasts seeking enhanced engine longevity and cleanliness. Brand: Perrin Performance Product: Air Oil Separator Black 2002-2021 WRX / 2004-2021 STi Part Number: PSP-ENG-620BK Fitment: 2002-2003 WRX, 2004-2005 STI, 2004-2005 WRX, 2006-2007 STI, 2006-2007 WRX, 2008-2010 STI, 2008-2010 WRX, 2011-2014 STI, 2011-2014 WRX, 2015-2021 STI, 2015-2021 WRX Material: CNC-machined aluminum Finish: Black ceramic coating Construction: CNC machined, ceramic coated Origin: Made in USA Key Benefits Engine Health: Reduces oil vapor ingestion to minimize carbon buildup in the intake manifold and valves. Durability: Ceramic coating protects against corrosion and oil residue buildup, ensuring long-lasting performance. Fitment: Direct bolt-on design tailored for WRX and STI models from 2002 to 2021 for seamless integration. Maintenance: Helps extend intervals between intake cleaning, saving time and maintenance costs. Performance: Supports consistent engine operation by maintaining cleaner intake air pathways. Quality: Precision CNC machining guarantees tight tolerances and reliable sealing. What's Included 1× Perrin Air Oil Separator Black 2002-2021 WRX / 2004-2021 STi Mounting hardware Installation & Compatibility Installation of the Perrin Air Oil Separator is straightforward for enthusiasts with basic mechanical skills and requires no special tools beyond standard hand tools. The unit is a direct bolt-on replacement for the factory PCV system components on compatible WRX and STI models, ensuring a clean and secure fit. No engine tuning is required after installation, but it is recommended to verify fitment against your specific model year and trim to avoid compatibility issues. Professional Installation: DIY-friendly Modifications Required: None Verify Compatibility: Confirm fitment for your specific year and trim level Shop with confidence at Subimods—your Subaru parts specialists.
