Walker 245-1494 Mass Air Flow Sensor

Mass Air Flow Sensor for BMW 120i

Walker 245-1494 is a complete assembly mass air flow sensor built for 2005-2012 BMW 120i applications. It includes the housing and is configured as a standard replacement with a female 5-terminal connector, oblong connector shape, and plastic housing.

Walker Products supplies this MAF sensor as a new, tested component rather than a remanufactured unit. The 245-1494 is programmed and verified for fit, form, and function, with flow characteristics tuned for the vehicle application. For BMW 120i owners replacing a failing air metering unit, this complete assembly helps restore accurate airflow measurement at the intake.

Key Features

• Complete assembly mass air flow sensor with housing included
• Fits 2005-2012 BMW 120i, N/A
• Walker part number 245-1494
• Standard replacement design
• Female connector with 5 terminals
• Oblong connector shape and plastic housing
• Mounting hardware included
• 2 mounting holes
• Spade terminal type

Product Details

Walker Complete Assembly MAF sensors are engineered for direct replacement service on select BMW applications. This unit is built with OEM-quality components and custom circuit board programming, then production tested before release. Because the housing is included, it is a practical choice when the original sensor body or air tube area needs to be replaced along with the sensor element. Walker 245-1494 is designed for 2005-2012 BMW 120i models and is part of Walker Products’ long-running fuel system and engine sensor program.

Common Problems This Part Can Address

• Rough idle caused by inaccurate airflow readings
• Check engine light related to mass air flow sensor faults
• Hesitation or poor throttle response during acceleration
• Fuel trim issues from incorrect air metering
• Driveability problems after contamination or sensor wear

Installation Notes and Tips

Verify the connector style, mounting points, and intake housing configuration before installation. Because this is a complete assembly, inspect the intake tract and connector area for dirt, oil residue, or damage before fitting the new unit. Follow the vehicle service procedure for relearning or clearing fault codes after replacement. Fits 2005-2012 BMW 120i, N/A.

Quality Assurance

Walker Products has supplied automotive fuel system components since 1946 and is an ISO 9001 and IATF 16949 certified manufacturer. The 245-1494 is new, programmed, and tested for fit, form, and function, with on-vehicle verification used during development. This part cross-references Bosch (e.g., 0280218063) for the same application.