The DELPHI Detonation Sensor (AS10222) is engineered to accurately detect engine knock or detonation. This critical sensor monitors vibrations within the engine block, signaling the engine control unit (ECU) to adjust ignition timing. By preventing pre-ignition and detonation, it helps maintain optimal engine performance, fuel efficiency, and protects vital engine components from damage. Designed for reliable and long-lasting service, this sensor is a direct fit for specified applications.