This BOSCH Detonation Sensor, part number 0 261 231 040, is engineered to accurately detect engine knock or detonation. By identifying these harmful vibrations, the sensor provides crucial data to the engine control unit (ECU). The ECU then adjusts ignition timing and fuel mixture in real-time to prevent engine damage and maintain optimal power output. This proactive measure is essential for the longevity and efficiency of your vehicle's engine. Crafted with BOSCH's renowned quality and precision, this sensor ensures reliable operation under demanding conditions. Its robust construction is designed to withstand the harsh environment of the engine bay, providing consistent performance over time.