The Bosch Knock Sensor - 0261231120 is a high-quality sensor designed to detect engine knocking or pinging in a vehicle's combustion chamber. It is made by Bosch, a reputable automotive parts manufacturer known for their reliability and performance. This specific sensor has a part number of 0261231120 and is compatible with various vehicle makes and models. It is responsible for sending signals to the engine control unit (ECU) to adjust the ignition timing and prevent engine damage caused by knocking. This sensor is crucial in maintaining the engine's optimal performance and efficiency. It is a durable and accurate sensor that is essential for any vehicle's smooth operation.