Perrin Air Oil Separator V2 Black 2002-2021 WRX / 2004-2021 STi | Ceramic-Coated CNC Machined | Engine Health Component
Overview
The Perrin Air Oil Separator (AOS) V2 is a precision-engineered solution designed to capture oil vapors from the crankcase gases before they reach the intake manifold on Subaru WRX and WRX STI models spanning 2002 to 2021. By efficiently separating oil from the blow-by gases, this component helps prevent carbon buildup inside the intake tract, a common issue that can compromise engine performance and longevity. This product is ideal for Subaru enthusiasts who prioritize engine cleanliness and reliability, especially those with modified or high-mileage engines seeking to maintain optimal running conditions.
Crafted with a ceramic-coated, CNC-machined aluminum body, the Perrin AOS combines durability with functional design. The ceramic coating reduces oil adhesion inside the separator, enhancing its efficiency and resistance to corrosion. Perrin’s approach emphasizes robust construction and precise fitment, ensuring that the AOS integrates seamlessly with Subaru’s PCV system while delivering consistent performance benefits.
Installing the Perrin Air Oil Separator offers tangible advantages such as reduced intake manifold contamination, improved throttle response, and potentially extended engine life by minimizing harmful oil vapor ingestion. For WRX and STI owners, this means less frequent intake cleaning, better engine health, and a more reliable driving experience whether on the street or during spirited driving sessions.
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.
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Brand: Perrin Performance
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Product: Air Oil Separator V2 Black 2002-2021 WRX / 2004-2021 STi
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Part Number: PSP-ENG-620BK
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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
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Material: CNC-machined aluminum
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Finish: Black ceramic coating
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Construction: CNC machined, ceramic coated
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Origin: Made in USA
Key Benefits
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Engine Health: Effectively reduces oil vapor ingestion to minimize carbon buildup in the intake manifold and valves, preserving engine performance.
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Durability: Ceramic coating protects against corrosion and oil residue buildup, ensuring long-lasting, reliable operation.
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Fitment: Direct bolt-on design tailored specifically for WRX and STI models from 2002 to 2021 for seamless integration without modifications.
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Maintenance: Helps extend intervals between intake cleaning, reducing maintenance time and costs for Subaru owners.
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Performance: Supports consistent engine operation by maintaining cleaner intake air pathways, which can improve throttle response.
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Quality: Precision CNC machining guarantees tight tolerances and reliable sealing, critical for effective crankcase ventilation management.
What's Included
- 1× Perrin Air Oil Separator V2 Black 2002-2021 WRX / 2004-2021 STi
- Mounting hardware
- Installation instructions
Installation & Compatibility
Installation of the Perrin Air Oil Separator is straightforward and DIY-friendly for enthusiasts with basic mechanical skills. It requires no special tools beyond standard hand tools and installs as a direct bolt-on replacement for the factory PCV system components on compatible WRX and STI models. No engine tuning or additional modifications are necessary after installation. It is recommended to verify fitment against your specific model year and trim to ensure compatibility.
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Professional Installation: DIY-friendly
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Modifications Required: None
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Verify Compatibility: Confirm fitment for your specific year and trim level
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