Genuine OEM Hyundai Differential Pressure Hose, part number 392402U000. This hose is crucial for measuring pressure differences within the exhaust or emissions system, providing vital data to the engine control unit. It connects to a differential pressure sensor, typically located near the catalytic converter or diesel particulate filter. Using a genuine OEM hose ensures precise fitment and the correct material properties for reliable, long-term operation in high-temperature environments.