Genuine OEM Hyundai Engine Breather Hose, part number 2671003090. This hose is an integral part of the engine's positive crankcase ventilation (PCV) system, allowing engine gases to vent and recirculate back into the intake for combustion. It connects to the valve cover, ensuring efficient management of crankcase pressure and emissions. Opting for a genuine OEM breather hose guarantees the correct material composition, flexibility, and precise fitment to prevent vacuum leaks and maintain optimal engine performance.