Description
Protect your engine and improve crankcase oil management with the COBB Tuning Air Oil Separator (AOS) for the 2015–2020 Subaru WRX. Designed for performance-oriented Subaru applications, an air oil separator helps separate oil from crankcase ventilation gases before they are recirculated through the intake system.
During spirited driving, boost pressure, and high engine loads, oil vapor can travel through the crankcase ventilation system and contribute to oil buildup in the intake tract. An air oil separator helps capture oil from these gases and return the separated oil to the engine, helping reduce oil vapor entering the intake system.
The COBB Tuning Air Oil Separator is a valuable consideration for Subaru WRX owners who want to support engine cleanliness and oil management, particularly when driving enthusiastically or modifying their vehicle for increased performance. It can complement other performance upgrades as part of a properly configured engine setup.
Designed with Subaru enthusiasts in mind, this AOS provides a solution for managing oil vapor in compatible applications. Before purchasing, confirm the exact product version, installation requirements, and compatibility with your engine configuration and any existing aftermarket components.
Key Features
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Brand: COBB Tuning
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Product Type: Air Oil Separator (AOS)
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Vehicle Application: Subaru WRX
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Model Years: 2015–2020
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Helps separate oil from crankcase ventilation gases.
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Helps reduce oil vapor entering the intake system.
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Supports improved crankcase oil management during spirited and performance driving.
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Suitable for compatible street and modified Subaru WRX applications.
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Verify included components, installation hardware, and manufacturer-specific requirements before ordering.
Fitment
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2015–2020 Subaru WRX
Fitment Note: Confirm the exact model year, engine configuration, and product revision before ordering. Do not assume compatibility with the Subaru WRX STI or other Subaru models unless explicitly confirmed by COBB Tuning.
Important Installation & Compatibility Notes
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Follow the manufacturer's installation instructions and recommended maintenance procedures.
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Confirm compatibility with any aftermarket intake, turbocharger, or crankcase ventilation modifications.
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An air oil separator supports oil management but does not replace regular oil-level checks or scheduled engine maintenance.
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Verify the kit's exact contents and any additional installation requirements before purchase.
