Genuine OEM Porsche Crankcase Vent Hose, part number 94810721451. This flexible hose is designed to route crankcase gases away from the engine, which is essential for emissions control and preventing pressure buildup within the crankcase. It plays a key role in maintaining engine health. This vent hose weighs 0.2 kg. Genuine OEM hoses are constructed with materials resistant to oil and heat, ensuring durability and proper function.