Set of 5 Pieces Crankcase Vent Valve Breather Hose Kit Fits for E46 E39 E60 320i 323i 325 325i 325ci 328i 330i 330ci 330xi 525i 528i - PCV Crank Case Ventilation Oil Separator Hose 11617501566 electronics_update_2023 Color:SILVER | Size:AC Button ●INFORMATIONS:

Color:SILVER | Size:AC Button ●INFORMATIONS: 1

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Set of 5 Pieces Crankcase Vent Valve Breather Hose Kit Fits for E46 E39 E60 320i 323i 325 325i 325ci 328i 330i 330ci 330xi 525i 528i - PCV Crank Case Ventilation Oil Separator Hose 11617501566 electronics_update_2023 Color:SILVER | Size:AC Button ●INFORMATIONS:Set of 5 Pieces Crankcase Vent Valve Breather Hose Kit Fits for E46 E39 E60 320i 323i 325 325i 325ci 328i 330i 330ci 330xi 525i 528i PCV Crank Case Ventilation Oil Separator Hose 11617501566 Read more What is it? The crankcase vent system separates liquid oil from the air inside the engine and intake. When working correctly, oil is removed from the intake air and returned to the oil pan. Oil vapor remains and is burned up in the combustion chamber.