Genuine OEM Hyundai Differential Pressure Hose, part number 393632M481. This hose is crucial for the emissions system, accurately measuring pressure differences within the exhaust to provide data to the engine control unit. It is typically found connected to exhaust components like the catalytic converter or diesel particulate filter. Using a genuine OEM hose ensures precise fitment and material integrity, which is vital for maintaining accurate sensor readings and proper emissions system function.