1set PCV Crankcase Vent Valve And Breather Hose Kit 11617504535 11617504536 11611432559 Fit For BMW M54 X3 X5 Z4 E46 E39 E60 Engine. Other Part Number : 11617504535 11617504536 11611432559 11157532649 this cooling hose is flexible, resistant to high temperatures, pressure, and providing long-lasting protections for your engine. It stabilizes engine output by regulating the airfuel mixture ratio eliminating malfunctions such as rough idle and unexpected shutdowns triggered by fuel fluctuations. This component captures and reuses fuel inside the automotive system with efficiency cutting down the release of harmful exhaust pollutants., Manufacturer: EHYSYN