Genuine BMW Breather Hose

The Genuine BMW Engine Crankcase Breather Hose (also called a crankcase vent hose or PCV breather hose) is an original equipment part. It is part of the crankcase ventilation system, which routes blow-by gases and oil vapor from the engine crankcase back into the intake so they can be burned. This helps control internal crankcase pressure and supports emissions performance.

Key Features:

• Original equipment part made to BMW specifications for fit, function and durability
• Made to handle the heat, oil vapor and pressure changes found in crankcase ventilation circuits
• Helps keep crankcase pressure balanced and reduces the chance of oil leaks and seal stress
• Helps the engine meet its emissions design targets
• Replaces a cracked, brittle, collapsed or leaking hose

A worn breather hose can cause vacuum leaks, rough idle, oil seepage, a check engine light or poor engine performance. Fitting a Genuine BMW replacement restores correct crankcase ventilation. Select the child item that matches the part number you need.