The ISR Performance 240sx MAF Adapter is a high-quality Mass Airflow Sensor (MAF Sensor) designed for Nissan vehicles. It features a clip-on and screw-in mounting style, with a black connector color and 4 wires. This adapter is a performance part specifically designed for the engine compartment, ensuring accurate and efficient air intake measurement. Manufactured by ISR Performance, this sensor is a reliable upgrade for those looking to improve their vehicle's fuel delivery system. Package is opened but was never installed so it is new with packaging