Global Parts 1813389 Mass Air Flow Sensor Assembly

Mass Air Flow Sensor Assembly for BMW Intake Air Measurement

Global Parts 1813389 is a mass air flow sensor assembly for BMW applications that rely on accurate intake air measurement for fuel delivery and ignition control. It reads the amount and density of incoming air so the engine control unit can calculate the proper air-fuel mixture.

This part number, 1813389, is a direct-fit style replacement for select BMW 325i, 325Ci, 330i, 330Ci, X3, and Z4 applications with sensor and housing configurations noted below.

Key Features

• Measures intake air volume and density for engine management
• Supports precise fuel injection and ignition timing control
• OE-style replacement for select BMW intake systems
• Cross-references Delphi AF10227 for the same application
• Part number 1813389 for catalog and fitment lookup

Detailed Description

The Global Parts 1813389 mass air flow sensor assembly provides the airflow data the engine control unit uses to manage combustion efficiency. By monitoring incoming air at the intake system, it helps the engine maintain the correct fuel-to-air ratio under changing driving conditions. This makes it a practical replacement for BMW models that use a sensor with housing design, including 2003-2006 BMW 325Ci, 2003-2005 BMW 325i, 2003-2006 BMW 330Ci, 2003-2005 BMW 330i, 2004-2005 BMW X3, and 2003-2005 BMW Z4.

Compatible With 2003-2006 BMW 325Ci, M56; 2003-2005 BMW 325i, M56; 2003-2006 BMW 330Ci, sensor w/ housing; 2003-2005 BMW 330i, sensor w/ housing; 2004-2005 BMW X3, sensor w/ housing; and 2003-2005 BMW Z4, sensor w/ housing. Use 1813389 when searching for a replacement mass air flow sensor assembly for BMW intake air metering needs.

What It Helps Address

• Rough idle caused by inaccurate airflow readings
• Lean or rich fuel mixture conditions
• Reduced throttle response from faulty air metering
• Check engine light concerns related to airflow sensor performance
• Driveability issues tied to intake air measurement errors

Installation Notes and Tips

Verify the connector style, housing configuration, and engine application before installation. Confirm the vehicle listing matches the exact BMW model and year shown above, especially where the notes specify M56 or sensor with housing. Inspect the intake tract for leaks or contamination that can affect airflow readings after replacement.

Quality Assurance

Global Parts 1813389 is built as an emission control sensor component for accurate intake air measurement in supported BMW applications. It is listed with OE-style interchange references for catalog matching and application verification.