The Bosch 0280218372 Mass Air Flow (MAF) Sensor is a precision engineered hot-film air mass meter designed to accurately measure intake air volume in vehicle engines. This sensor plays a critical role in engine management by providing the ECU with real-time air flow data, enabling optimal fuel injection timing and air-fuel ratio calculations for improved performance and fuel efficiency. Key Features: 100% new complete sensor and housing assembly, pre-calibrated together for precise operation Hot-film technology provides accurate air flow measurement based on heat dissipation principles OE-quality construction ensures proper calibration for trouble-free operation and emissions compliance Patented design increases robustness against water and particulate contamination Reduces sensor drift and maintains accuracy over extended service life OE-identical connector ports and mounting points ensure direct-fit installation Bosch is a global leader and original equipment manufacturer in mass air flow sensor technology, providing extensive coverage for Asian, European, and Domestic vehicle applications. A failing MAF sensor may cause symptoms including rough idle, increased fuel consumption, elevated emissions, and poor drivability. This complete sensor assembly ensures the sensing element and housing are properly matched for reliable performance.