Genuine OEM Audi Coolant Pump Bush, part number 4G0129381B. This small, precision-engineered bushing provides crucial support for the coolant pump, ensuring its stable mounting and proper alignment within the engine cooling system. Located near the coolant pump assembly, it helps to dampen vibrations and maintain correct positioning. With a weight of approximately 0.0031 kg and a diameter of 0.023m, it is designed to factory specifications. Using a genuine OEM bush guarantees the correct material properties and exact dimensions, which are essential for reliable coolant pump operation and preventing premature wear.