This BOSCH Detonation Sensor, part number 0 261 231 004, is designed to accurately detect engine knock or detonation. By identifying abnormal combustion events, it allows the engine control unit (ECU) to adjust ignition timing, preventing engine damage and ensuring optimal performance. Manufactured by BOSCH, a trusted name in automotive components, this sensor provides reliable and precise readings for consistent engine operation. Ensure your engine runs smoothly and efficiently with this essential component.