Genuine OEM BMW crankcase ventilation return line, part number 11157832781. This component facilitates the efficient return of gases and fluids within the crankcase ventilation system. It is engineered to maintain the integrity of the engine's pressure management assembly. The line features factory-spec fittings and durable construction to ensure a secure, leak-free connection. Choosing genuine OEM ensures the correct routing geometry and material resistance required for long-term engine performance and reliability.