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9-liter B series diesel engines
It regulates crankcase pressure by allowing excess gases to vent safely
enabling optimized air-fuel mixture and improved engine efficiency
Serving as the engine control system’s communication backbone
CUMMINS HOUSING,BREATHER Top Seller 9-liter B series diesel enginesThis crankcase breather filter housing is designed for 2003 2005 5. 9L common rail Cummins engines. Installed on the valve cover, it controls blow by vapors to maintain engine ventilation and reduce emissions. As a direct fit replacement, it ensures proper sealing and reliable performance to support engine longevity and efficiency.