The BEMWQ Air Mass Meter (Part No.: 2740940048) is a high-precision Mass Air Flow (MAF) sensor designed for Mercedes-Benz vehicles equipped with the M274 2.0L turbocharged inline-4 engine. It is fully compatible with chassis models including the W205 (C-Class), V212 (E-Class), V213 (E-Class), X253 (GLC-Class), and X204 (GLK-Class). Positioned in the intake tract immediately after the air filter, this sensor accurately measures the mass and density of incoming air, providing critical real-time data to the ECU for calculating the optimal air-fuel mixture to ensure efficient combustion and engine performance.

• Exact OEM Specification:​ Manufactured to match the original equipment standard 2740940048, ensuring precise fitment, correct electrical connector alignment, and seamless integration with the vehicle’s air intake housing without modification.

• High-Precision Measurement:​ Utilizes calibrated sensing elements to deliver accurate and responsive airflow readings, enabling the engine control unit to maintain the ideal stoichiometric ratio for efficient combustion across all RPM ranges.

• Durable Construction:​ Built with robust housing materials and quality internal electronics designed to withstand engine bay heat, moisture, and vibrations, ensuring long-term reliability.

• Plug-and-Play Design:​ Engineered as a direct electrical and mechanical replacement, allowing for straightforward installation using existing mounting points and connectors for immediate operation.

• Restored Engine Performance:​ Eliminates common issues caused by a failing MAF sensor—such as sluggish acceleration, hesitation, rough idling, and erratic RPM fluctuations—by restoring accurate airflow data to the engine management system.

• Improved Fuel Efficiency & Emissions:​ Helps optimize fuel delivery based on real-time air intake, correcting rich or lean running conditions, which can lead to better gas mileage and reduced harmful exhaust emissions.

• Check Engine Light Resolution:​ Directly addresses common MAF-related diagnostic trouble codes (e.g., P0100-P0104 series) and sensor circuit faults, turning off the dashboard warning light and preventing the vehicle from entering reduced-power "Limp Mode".

• Cost-Effective Maintenance Solution:​ Provides a dependable and economical alternative to OEM parts for resolving airflow measurement issues, ensuring smooth drivability and protecting the engine from improper fueling wear.