Genuine OEM Audi Reduction Agent Injector, part number 04L131113S. This component is crucial for modern emissions systems, precisely injecting reduction agent into the exhaust stream to reduce harmful nitrogen oxides. It is located within the exhaust system, typically upstream of the SCR catalyst. Weighing 0.232 kg, this injector is designed for accurate and reliable dosing. Choosing a genuine OEM injector ensures precise spray patterns and flow rates, critical for optimal emissions reduction and preventing costly system malfunctions.