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The COBB Air Oil Separator is a direct-fit catch can for 2016–2018 Ford Focus RS models. Designed to separate oil and blow-by from crankcase vapors before they re-enter the intake, it helps reduce intake contamination and oil buildup. This vehicle-specific air‑oil separator offers a straightforward replacement for stock PCV routing during maintenance or performance tune preparations.
Cobb 16-18 Ford Focus RS Air Oil Separator
