The TOPRAN 206 621 is a precision-engineered air flow meter, also known as a Mass Air Flow (MAF) sensor. It plays a crucial role in your vehicle's engine management system by accurately measuring the volume and density of air entering the intake manifold. This data is then transmitted to the engine control unit (ECU), which uses it to calculate the precise amount of fuel needed for optimal combustion. A properly functioning air flow meter contributes to smoother engine operation, improved fuel economy, and reduced emissions. Crafted with quality materials, the TOPRAN 206 621 is built for durability and reliable performance. Replacing a faulty MAF sensor can resolve issues such as rough idling, poor acceleration, engine misfires, and the illumination of the check engine light.