Genuine OEM Mercedes-Benz Injection Nozzle, part number A0004900200. This component is a critical part of the fuel system, responsible for atomizing and injecting fuel into the engine's combustion chamber at the precise moment and in the correct quantity. Proper functioning of the injection nozzle is essential for efficient combustion, engine power, and emissions control. Genuine OEM injection nozzles are manufactured to extremely tight tolerances to ensure accurate fuel delivery, optimal spray pattern, and long service life, contributing to overall engine health and performance.