Genuine OEM Audi Rear Bass Speaker, part number 4K9035411. This component is designed to reproduce low-frequency audio, providing deep and resonant bass for the vehicle's sound system. It is specifically positioned in the rear door assembly. Weighing 0.65 kg with dimensions of 0.21m length, 0.21m width, and 0.08m height. Choosing a genuine OEM bass speaker ensures correct impedance, power handling, and acoustic characteristics for powerful, undistorted low-frequency output and seamless integration.