Description
Upgrade your Ford Focus ST's crankcase ventilation system with the COBB Air Oil Separator (AOS), designed for 2013–2018 Ford Focus ST models. Manufactured by COBB Tuning, this performance-oriented component helps separate oil vapor from crankcase ventilation gases before they are routed back into the engine's intake system.
By helping reduce the amount of oil mist entering the intake tract, the COBB Air Oil Separator supports a cleaner intake system and is a practical addition to both daily-driven and modified Focus ST builds.
Key Features
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COBB Air Oil Separator (AOS)
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Designed for the Ford Focus ST
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Helps separate oil vapor from crankcase ventilation gases
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Helps reduce oil mist entering the intake system
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Supports proper crankcase ventilation
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Suitable for stock and performance-oriented applications
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Application-specific design
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Manufactured by COBB Tuning
Fitment
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2013–2018 Ford Focus ST
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Engine: 2.0L EcoBoost Turbocharged
Installation & Compatibility Notes
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Confirm compatibility with the vehicle's existing intake and crankcase ventilation configuration.
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Follow COBB's installation instructions for proper hose routing and secure connections.
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Inspect all fittings and connections after installation.
