Walker 245-1301 Mass Air Flow Sensor

Walker Mass Air Flow Sensor for BMW

Restore accurate airflow measurement with the Walker Mass Air Flow Sensor, part number 245-1301. This replacement sensor is built for BMW applications where precise air metering is critical for drivability, fuel control, and engine management.

Compatible With select 2012-2018 BMW 235i, 335i, 335i xDrive, 335i GT xDrive, 435i, 435i xDrive, M235i, M2, M135i, and ActiveHybrid 3 applications, this Walker Mass Air Flow Sensor supports OE-style fitment for the listed vehicles.

Key Features

• Walker Mass Air Flow Sensor, part number 245-1301
• Housing included
• Mounting hardware included
• 5-terminal female connector
• Built for BMW engine management applications
• Cross-references BMW 13627612746 and Spectra Premium MA458 for the same application

Product Details

Walker Products has supplied fuel system and engine sensor components since 1946, with manufacturing and engineering support focused on meeting or exceeding OEM standards and specifications. The Walker Mass Air Flow Sensor line is part of that engine management offering, providing a direct replacement solution for vehicles that rely on accurate intake air measurement for proper fuel delivery and throttle response. Part number 245-1301 is specified for BMW models including the 2016-2017 BMW M2, 2014-2015 BMW 335i, and 2014-2015 BMW 435i xDrive, among others listed in the fitment data.

This sensor is a practical choice for BMW owners searching for a mass air flow sensor replacement for 2013-2016 BMW M135i, 2014-2015 BMW 335i xDrive, or 2015 BMW M235i xDrive applications. It is also listed for 2018 BMW M2 and 2014 BMW 235i sensor-only applications.

Common Issues This Part May Address

• Incorrect airflow readings affecting fuel trim
• Rough idle or unstable engine operation
• Reduced throttle response during acceleration
• Check engine light related to air metering faults
• Driveability concerns caused by a failing mass air flow sensor

Installation Notes

Verify the connector style, terminal count, and vehicle application before installation. This sensor uses a female connector and 5 terminals, with housing included and mounting hardware included as listed in the product attributes. Confirm the exact BMW model, year, and application notes before replacing the original sensor.

Fits 2018 BMW M2, N/A; Fits 2016-2017 BMW M2, N/A; Fits 2013-2016 BMW M135i, N/A; Fits 2014-2015 BMW 335i, N/A; Fits 2014-2015 BMW 335i GT xDrive, N/A; Fits 2014-2015 BMW 335i xDrive, N/A; Fits 2014-2015 BMW 435i, N/A; Fits 2015 BMW 435i Gran Coupe, N/A; Fits 2014-2015 BMW 435i xDrive, N/A; Fits 2015 BMW 435i xDrive Gran Coupe, N/A; Fits 2013-2015 BMW ActiveHybrid 3, N/A; Fits 2014-2015 BMW M235i, N/A; Fits 2015 BMW M235i xDrive, N/A; Fits 2014 BMW 235i, N/A; Fits 2012-2013 BMW 335i, N/A.

Quality Assurance

Walker Products is an ISO 9001 and IATF 16949 certified manufacturer with in-house product management and engineering support. The company focuses on producing engine sensors and fuel system components to meet OEM-level specifications for the automotive aftermarket.