The Breather Air Filter is a simple component that is usually mounted on the PCV cover or crankcase breather in some engines, and its purpose is to:
- Prevents dirt and dust from entering the PCV/CCV system, keeping the oil clean and reducing deposit buildup inside the passage and valve openings.
- Filtering oil vapors and oil mist before they exit or are re-injected into the cylinder, reducing the formation of carbon deposits inside the combustion chambers.