BMW Crankcase Breather Hose - Genuine BMW 11617838898

Engine Crankcase Breather Hose The engine crankcase breather hose is a vital part of your BMW’s positive crankcase ventilation (PCV) system. It directs pressurized air from the engine crankcase to the air/oil separator (PCV valve). The PCV valve removes oil vapors from the air, allowing them to return to the engine while feeding filtered air to the intake for combustion. This hose endures constant exposure to heat, pressure, and oil vapors, making it prone to wear and failure. A properly functioning breather hose is essential for maintaining engine performance, emissions compliance, and protecting against oil loss. Common Failure Symptoms

1. Cracks, Breaks, or Leaks:
   • Prolonged exposure to heat and oil vapors can degrade the hose, leading to cracks, leaks, or breaks.
2. Broken Connectors:
   • Heat and age can make plastic connectors brittle, causing them to break during removal or routine maintenance.
3. Damaged Hose:
   • Over time, rubber hoses can soften and split, or plastic hoses may develop holes or cracks.
4. Check Engine Light (CEL):
   • Leaks from a faulty hose can allow unmetered air into the system, triggering airflow-related diagnostic trouble codes.
5. Engine Misfire:
   • Significant air intake leaks may result in rough engine operation or misfires.
6. Oil Residue:
   • Faulty hoses can release oil vapors, leaving residue on surrounding components. This may cause a burning oil smell.
7. Engine Burning Oil:
   • A failing breather hose can lead to oil being burned in the combustion process, increasing oil consumption.

About Genuine BMW Genuine BMW parts are manufactured to meet the same rigorous standards as the components used in your vehicle’s original assembly. Opting for Genuine BMW ensures a precise fit, reliability, and optimal performance. BMW often collaborates with trusted Original Equipment Manufacturers (OEMs) such as Lemforder, ZF, Sachs, Bosch, Valeo, Zimmermann, Siemens VDO, and Corteco. These manufacturers have been producing parts for BMW for decades, adhering to strict quality standards. When you purchase Genuine BMW parts, you may find OEM branding alongside the BMW logo, as they originate from the same suppliers. Look for OE tags to identify high-quality components that deliver the same performance at a potentially lower cost. Protect your Ultimate Driving Machine with Genuine BMW parts to maintain peak performance and reliability.