Genuine OEM Audi Pressure Differential Sensor Hose, part number 04L131552CQ. This hose assembly is a critical component that connects to the pressure differential sensor, transmitting exhaust gas pressure readings to the engine control unit. It is typically located within the exhaust system, often near the diesel particulate filter. Weighing approximately 0.528 kg, it is constructed from materials designed to withstand high temperatures and corrosive exhaust gases. Using a genuine OEM hose ensures proper sealing and accurate pressure transmission, vital for emissions control and engine performance.