Genuine OEM Audi Exhaust Fluid Injector, part number 4H0131113A. This component is crucial for emissions reduction, precisely injecting exhaust fluid into the exhaust system to neutralize harmful pollutants. It operates within the vehicle's exhaust aftertreatment system. Weighing approximately 0.26 kg and measuring 0.105 m in length, it is a compact yet vital part. Choosing a genuine OEM injector ensures precise fluid delivery, correct spray pattern, and long-term durability, which are essential for maintaining the vehicle's emissions compliance and system integrity.