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The ERA RPM Sensor (550355A) is a crucial component for your vehicle's engine management system. It accurately detects the rotational speed of the engine, providing vital data to the vehicle's computer. This sensor plays a key role in various engine functions, including ignition timing and fuel injection. By ensuring precise RPM readings, it contributes to smoother engine operation and overall efficiency. Crafted by ERA, a reputable brand in automotive parts, this sensor is built to meet stringent quality standards. Its reliable performance helps maintain your vehicle's optimal running condition.