The Bosch 0281002978 Mass Air Flow (MAF) Sensor is an OEM-quality sensor designed to accurately measure the air flow rate entering fuel-injected engines. Bosch MAF sensors are precisely calibrated to ensure maximum efficiency by telling the engine's computer controls how much air is being taken in to match the fuel injection system for optimum power and efficiency. Key Features: OEM quality sensor from the world's leading automotive supplier Precision calibrated for accurate airflow measurement Direct replacement for Mercedes-Benz part number 0000943448 Designed for Mercedes-Benz and Freightliner Sprinter applications Ensures proper fuel-to-air mixture for optimal performance As an original equipment global leader in mass air flow technology, Bosch MAF sensors ensure low levels of harmful emissions with greater fuel efficiency and improved engine performance. Signs of a failed mass airflow sensor may include rough idle, a rise in fuel consumption, increased harmful emissions, and poor drivability. This sensor provides the exact fit and performance expected from genuine Bosch engineering.