The ABAKUS Detonation Sensor, part number 120-09-239, is designed to monitor and detect engine knock or detonation. This critical sensor plays a vital role in maintaining engine health and performance by providing feedback to the engine control unit (ECU). When detonation occurs, the sensor registers the vibrations and sends a signal to the ECU. The ECU then adjusts ignition timing to prevent further knocking, which can cause significant engine damage. This proactive measure helps protect your engine's internal components and ensures its longevity. Installing the ABAKUS Detonation Sensor can help restore proper engine operation and prevent potential issues related to uncontrolled combustion. It is a reliable component for ensuring your vehicle's engine performs at its best.