Genuine OEM Hyundai Differential Pressure Hose, part number 392402F700. This hose is a critical component in the vehicle's emissions control system, designed to transmit pressure readings to the differential pressure sensor. It connects to the exhaust system, allowing the sensor to accurately monitor exhaust gas flow and DPF (Diesel Particulate Filter) status. Using a genuine OEM hose ensures precise routing, resistance to high temperatures and exhaust gases, and accurate sensor readings, which are vital for proper emissions compliance and engine management.