Genuine OEM Audi Engine Speed Sensor Grommet, part number 057906376A. This grommet is designed to provide a secure seal and protection for the engine speed sensor and its wiring, preventing moisture, dirt, and debris from entering sensitive electrical connections. It ensures the sensor's proper function and longevity. Made from durable, flexible rubber, it offers excellent resistance to engine heat and fluids. Using a genuine OEM grommet guarantees a precise fit and material quality, crucial for maintaining the integrity of the electrical system and preventing sensor malfunctions.