Beck Arnley 158-0946 Mass Air Flow Sensor

Reliable Mass Air Flow Sensor for BMW Models

The Beck Arnley 158-0946 Mass Air Flow Sensor is designed to provide accurate airflow measurement for BMW vehicles including the 323i, 323is, 328i, 328is, 528i, and M3. This sensor helps maintain optimal engine performance by ensuring precise air-fuel mixture control.

• Compatible with BMW 323i, 323is, 328i, 328is, 528i, and M3 models
• Part number 158-0946 for exact fit and function
• Monitors air intake to optimize engine efficiency
• Manufactured by Beck Arnley, a trusted name in emission control sensors
• Contains lead as a chemical component, handle with care during installation

Product Details and Chemical Considerations

The Beck Arnley 158-0946 Mass Air Flow Sensor is an emission control component that measures the volume and density of air entering the engine. This data is critical for the engine control unit to adjust fuel injection and maintain emissions compliance. Notably, this sensor contains lead, a chemical that requires careful handling and disposal according to local regulations. Proper installation and maintenance ensure the sensor’s longevity and reliable performance in BMW 3 Series and 5 Series models.

Common Applications and Problem Resolution

• Restores accurate air flow measurement for BMW 323i, 328i, and M3 engines
• Resolves engine hesitation or stalling caused by faulty airflow data
• Improves fuel efficiency by providing correct air-fuel mixture information
• Helps reduce emissions by maintaining proper sensor function
• Eliminates check engine light triggers related to mass air flow sensor faults

Installation Notes and Tips

When installing the Beck Arnley 158-0946 Mass Air Flow Sensor, ensure the engine is cool and the ignition is off. Handle the sensor carefully to avoid damage to the sensing element. Since the sensor contains lead, use gloves and avoid direct contact. Follow BMW-specific service procedures for sensor replacement to maintain proper calibration and avoid diagnostic trouble codes.

Quality Assurance and Warranty Information

Beck Arnley products undergo rigorous testing to meet OEM standards for fit, form, and function. The 158-0946 Mass Air Flow Sensor is backed by a limited warranty that covers defects in materials and workmanship. This warranty provides assurance of product reliability when installed according to manufacturer guidelines in compatible BMW models.