Genuine BMW Crankcase Breather Vent Hose

The Genuine BMW Crankcase Breather Vent Hose (also called a crankcase ventilation hose, PCV hose or engine breather hose) is an original equipment part that carries crankcase vapors and blow-by gases from the engine block to the intake system or related ventilation components. It is part of the closed crankcase ventilation system that helps control internal engine pressure and emissions.

Key Features:

• Genuine BMW original equipment part built to the manufacturer's specifications
• Designed to resist engine heat, oil vapors and the chemicals found in crankcase gases
• Helps maintain correct crankcase ventilation and reduces the buildup of pressure inside the engine
• Supports emissions control by routing vapors back into the intake to be burned
• Made for a precise OEM fit, so the original routing and connections are kept

Breather hoses are exposed to constant heat cycling and oil vapor, so they can harden, crack or leak over time. A worn hose can cause vacuum leaks, rough idle, oil seepage or check-engine warnings. Replacing it with a Genuine BMW part restores proper ventilation and helps keep the engine running as designed. Select the child item that matches your application to get the exact part number.