Genuine OEM Kia Breather Hose, part number 2671003100. This hose is an essential component of the engine's crankcase ventilation system, allowing the engine to vent internal pressure. It connects the crankcase to the air intake system, ensuring proper air circulation and preventing oil contamination. Using a genuine OEM breather hose guarantees the correct material properties for resistance to oil and heat, precise routing, and a secure, leak-free connection, which is vital for maintaining engine health and emissions compliance.