| Year | Make | Model |
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| 2005 - 2019 | Ford | Focus |
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COBB AOS Air/Oil Separator | Ford Focus ST (13-18) (891610)
COBB AOS Air/Oil Separator | Ford Focus ST (13-18) (891610)
SKU:891610
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Regular price
$430.00 USD
Regular price
$430.00 USD
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$430.00 USD
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▶ Vehicle Fitments
The COBB Air/Oil Separator (AOS) for the 2013-2018 Ford Focus ST is a precision-engineered component designed to improve engine performance by preventing oil vapors from entering the intake system. Developed specifically for Ford’s EcoBoost engine, this separator integrates seamlessly into the crankcase ventilation system. The design has undergone extensive refinement to ensure compatibility with third-party emissions equipment and to provide a reliable upgrade that enhances engine cleanliness and longevity. Constructed with durable materials and optimized for efficient oil vapor separation, the COBB AOS helps maintain optimal air-fuel mixture quality, reducing carbon buildup and improving overall engine efficiency.
This Air/Oil Separator fits the 2013–2018 Ford Focus ST equipped with the EcoBoost engine. Installation is straightforward, designed as a direct replacement within the factory crankcase ventilation setup, requiring no major modifications. The unit is ideal for street and performance driving, offering benefits for daily use and spirited driving alike by reducing intake contamination and preserving turbocharger health. The kit includes the separator unit and all necessary fittings for a clean, bolt-on installation. Compatibility with emissions systems ensures it meets regulatory requirements while delivering enhanced engine protection and performance.
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Overview
Overview
COBB Air / Oil Separator (AOS)
Fitment: 2013-2018 Ford Focus ST
Part #: 891610
Overview
The COBB Air / Oil Separator (AOS) is a precision-engineered component designed to improve the crankcase ventilation system of your 2013-2018 Ford Focus ST. This part is intended for Focus ST owners seeking to enhance engine reliability by preventing oil vapors from entering the intake system, which can lead to carbon buildup and reduced performance over time. The AOS supports cleaner airflow and helps maintain engine efficiency by separating oil from the air before it recirculates.
Developed through years of refinement, the COBB AOS offers a seamless installation experience tailored specifically for the EcoBoost engine’s unique layout. It is an ideal upgrade for enthusiasts who want to protect their engine while maintaining optimal drivability and long-term durability.
Key Features
This Air / Oil Separator is designed with careful attention to function and fitment, featuring:
- Custom design optimized for the Ford Focus ST EcoBoost engine’s crankcase ventilation system
- Effective separation of oil vapors from intake air to reduce carbon buildup
- Durable construction to withstand engine bay conditions
- Engineered for straightforward installation without extensive modifications
- Helps maintain cleaner intake components and supports consistent engine performance
Installation & Fitment
The COBB AOS is designed for direct fitment on 2013-2018 Ford Focus ST models. Installation is intended to be straightforward, integrating smoothly with the existing crankcase ventilation system. It is recommended to verify fitment against your vehicle’s specifications and the part number to ensure compatibility.
