This Mass Air Flow (MAF) sensor from BREMI is designed to accurately measure the volume and density of air entering your vehicle's engine. By providing this critical data to the engine control unit (ECU), it enables precise adjustments to the fuel injection and ignition timing. Proper functioning of the MAF sensor is essential for maintaining optimal engine performance, fuel efficiency, and reducing emissions. A failing sensor can lead to a range of issues, including rough idling, poor acceleration, increased fuel consumption, and check engine lights. BREMI is a trusted name in automotive electrical components, known for producing reliable and high-quality parts. This MAF sensor (part code 30403) is manufactured to meet or exceed original equipment specifications, ensuring a direct fit and dependable operation.