This is a genuine VAG Nox-sensor, part number 04L907807EK. It plays a crucial role in your vehicle's emissions control system by accurately measuring the levels of nitrogen oxides (NOx) in the exhaust gases. Proper functioning of the Nox-sensor is essential for the engine control unit (ECU) to make necessary adjustments to the fuel-air mixture and exhaust aftertreatment systems. This helps in maintaining optimal engine performance, improving fuel efficiency, and ensuring compliance with emission standards. Replacing a faulty Nox-sensor with this genuine VAG part will restore your vehicle's emissions control capabilities, prevent potential engine performance issues, and help avoid check engine lights related to NOx emissions.
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