Genuine OEM Volvo Engine Crankcase Vent Hose, part number 30720101. This hose routes crankcase gases for ventilation. It is a crucial component for maintaining proper engine breathing and preventing pressure buildup within the crankcase. The hose has a length of 0.1 meters and a width of 0.05 meters. Genuine OEM parts are essential for crankcase ventilation hoses to ensure they are made from the correct material to withstand engine temperatures and resist degradation, maintaining their sealing properties and preventing leaks.