ME354459 Engine Breather Filter 11811-NY025 21535312 8-97385919-0 S1222-EV040

ME354459 Equivalent to:
Nissan 11811-NY025
Volvo 21535312
Isuzu 8-97385919-0
Hino S1222-EV040
SF-Filter SOE539
Hifi SAO8654


The crankcase ventilation filter, also known as the crankcase breather filter, is an essential component in an engine's emission control system. Its primary function is to filter the air that enters the engine's crankcase, removing contaminants such as oil mist and gases.

Proper maintenance and usage of the crankcase ventilation filter are crucial for optimal engine performance and longevity. Here are some guidelines for its use:

1.Regular Inspection: Periodically inspect the crankcase ventilation filter for any signs of damage, clogging, or excessive oil accumulation. Replace the filter if it is damaged or excessively dirty.

2.Cleaning or Replacement: Follow the manufacturer's recommendations for cleaning or replacing the crankcase ventilation filter. This may vary depending on the specific filter type and the engine's operating conditions.

3.Proper Installation: Ensure that the crankcase ventilation filter is installed correctly, following the manufacturer's instructions. A secure and tight fit is necessary to prevent unfiltered air from entering the engine.

4.Sealing: Verify that all connections and seals associated with the crankcase ventilation filter are in good condition, preventing any air leaks that could compromise the filtration efficiency.

5.Correct Breather System Operation: The crankcase ventilation system should be in good working order, including associated components such as hoses and valves. Any malfunction should be addressed promptly to maintain proper airflow and filtration.

6.Environmental Considerations: Be aware of the operating environment and conditions that the engine is subjected to. Extreme temperatures, dusty or dirty conditions, and heavy engine usage may require more frequent inspection and maintenance of the crankcase ventilation filter.

By following these guidelines, you can ensure the effective operation of the crankcase ventilation filter, reducing the risk of engine damage and maintaining optimal engine performance. Always consult the manufacturer's instructions and recommendations specific to your engine and filter type for the best maintenance practices.