The FAE 79140 Engine Speed Sensor is designed to provide precise rotational speed data to your vehicle's engine control unit (ECU). This critical information allows the ECU to manage fuel injection, ignition timing, and other vital engine functions, contributing to smooth operation and fuel efficiency. Engineered to meet or exceed original equipment specifications, this sensor offers reliable performance and durability. Its construction utilizes high-quality materials to withstand the demanding conditions found in the engine bay, ensuring long-term functionality. Replacing a faulty engine speed sensor can resolve issues such as rough idling, stalling, poor acceleration, and check engine lights. The FAE 79140 is a direct fit replacement, simplifying the installation process and minimizing downtime.