Part 11157567801 (split number 11 15 7 567 801) is a ventilation hose component for automotive engine crankcases. It is compatible with the crankcase ventilation systems of certain vehicle . It is a key component for directing airflow within the vehicle's crankcase system. It assists in oil and circulation within the crankcase and maintains system pressure balance. It is made of oil- and temperature-resistant rubber material and meets engine system standards.