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The COBB air‑oil separator for Subaru captures oil and vapors from crankcase ventilation to reduce intake contamination. This unit is specified for Subaru WRX 2006–2007 and Subaru STI 2004–2007 applications, offering a direct‑fit solution designed to keep the intake tract cleaner and help maintain engine breathing under boost or daily driving conditions.
Cobb 06-07 Subaru WRX / 04-07 STi Air Oil Separator
