This DELPHI Detonation Sensor (part code AS10202) is engineered to accurately detect engine knock or detonation. By sensing abnormal combustion vibrations, it sends a signal to the vehicle's Engine Control Unit (ECU). The ECU then adjusts ignition timing to prevent engine damage and maintain optimal performance. Designed for reliability and precise operation, this sensor is a crucial component for modern engine management systems, ensuring smooth running and protecting your engine from harmful detonation.