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The MAGNETI MARELLI Lambda zonde, part number 466016355115, is a critical component for modern engine management systems. It plays a vital role in measuring the amount of unburned oxygen present in the exhaust gases. By accurately detecting oxygen levels, the Lambda sensor provides essential data to the engine control unit (ECU). The ECU then uses this information to adjust the air-fuel mixture in real-time, ensuring the most efficient combustion possible. This precise control helps to minimize emissions and maximize fuel economy. Replacing a faulty Lambda sensor with this MAGNETI MARELLI unit can restore proper engine operation. Symptoms of a failing sensor can include poor fuel economy, rough idling, increased emissions, and illuminated check engine lights. This part is engineered for durability and consistent performance.