Walker 245-2262 Mass Air Flow Sensor

Walker Sensor Only Mass Air Flow Sensor

Walker 245-2262 is a sensor-only mass air flow sensor for select BMW applications, built for direct replacement where the original MAF sensor has failed or drifted out of specification. It is a black, 5-terminal unit with a female oblong connector and blade pin terminals for a precise electrical connection.

Key Features

• Sensor-only design for faster, more economical replacement
• 100% new, never remanufactured construction
• Programmed and tested for fit, form, and function before release
• Custom-tuned flow characteristics for accurate air measurement
• Black housing with oblong connector shape
• 5-terminal, female connector with blade pin terminals
• 2 mounting holes for secure installation

Product Details

Walker Products builds this mass air flow sensor as part of its Sensor Only line, which focuses on replacing the sensing element without changing the complete housing assembly. That approach is often preferred when the original housing is serviceable and the connector air path is clean. Part number 245-2262 is engineered for BMW X5, 545i, 645Ci, 745i, and 745Li applications listed below, including 2004-2006 BMW X5 and 2003-2005 BMW 745i/745Li coverage.

Walker states that its MAF sensors are produced with OEM-quality components, custom circuit boards, and production testing in U.S. facilities for many high-demand applications. The brand also verifies calibration with on-vehicle testing to help maintain proper fuel trim performance across the operating range. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What This Sensor Helps Address

• Check engine light related to mass air flow sensor faults
• Rough idle or unstable engine operation caused by incorrect airflow readings
• Hesitation, stumble, or poor throttle response
• Fuel trim issues from inaccurate incoming air measurement
• Driveability problems after MAF sensor contamination or failure

Installation Notes and Tips

Before installation, inspect the intake tract, connector, and surrounding air path for dirt, oil residue, or damage. Because this is a sensor-only replacement, confirm that the existing housing and connector surfaces are clean and in good condition. Handle the sensing element carefully to avoid contamination, and verify the connector locks fully into place during installation.

Compatible With: Fits 2004-2006 BMW X5, N/A; Fits 2004-2005 BMW 545i, N/A; Fits 2004-2005 BMW 645Ci, N/A; Fits 2003-2005 BMW 745i, N/A; Fits 2003-2005 BMW 745Li, N/A.

Quality Assurance

Walker Products has supplied fuel system and engine sensor components since 1946 and is an ISO 9001 / IATF 16949 certified manufacturer. Part number 245-2262 is 100% new, programmed, and tested before sale, with calibration verified through production and vehicle testing.