Genuine OEM Volkswagen Pressure Difference Sender Hose, part number 05L131850B. This hose is designed to accurately transmit pressure differentials from a specific point in the engine system, such as the intake or exhaust, to a corresponding sender unit or sensor. It is typically found connected to the intake manifold or exhaust system. Weighing approximately 0.019 kg and measuring about 0.09 meters in length, its material and internal diameter are precisely calibrated. Using a genuine OEM hose ensures the correct pressure signal transmission, which is vital for accurate engine management and emissions control systems.