Walker 245-1303 Mass Air Flow Sensor

Walker Mass Air Flow Sensor 245-1303

Walker Mass Air Flow Sensor 245-1303 is a direct-fit engine management replacement for select BMW applications. It is built to meet or exceed OEM standards and specifications, with fitment coverage for 2013-2019 BMW 750i, 750Li, 550i, 650i, X5, and X6 models.

Key Features

• Mass air flow sensor for emission control and engine management systems
• Walker Mass Air Flow Sensor product line for OE-style replacement needs
• Built by Walker Products, an ISO 9001/IATF16949 certified manufacturer
• Engineered with manufacturing, product management, and technical support oversight
• Cross-references Spectra Premium MA466 for the same application
• Part number 245-1303 for accurate catalog lookup and ordering

Detailed Description

Walker Products has supplied fuel system and engine sensor components since 1946, and the Walker Mass Air Flow Sensor line reflects that long-running focus on aftermarket engine management parts. Part number 245-1303 is intended for BMW vehicles that require precise airflow measurement for proper fuel delivery and drivability. Compatible BMW applications include 2013-2015 BMW 750i, 750i xDrive, 750Li, and 750Li xDrive; 2014-2016 BMW 550i and 550i xDrive; 2014-2018 BMW 650i, 650i xDrive, and X5; 2014-2019 BMW 650i Gran Coupe and 650i xDrive Gran Coupe; and 2015-2019 BMW X6. It also fits the 2019 BMW X5 sensor-only application.

This part cross-references Spectra Premium MA466 for the same application.

What It Helps Address

• Rough idle caused by inaccurate airflow readings
• Hesitation or poor throttle response during acceleration
• Check engine light related to mass air flow sensor performance
• Incorrect air-fuel mixture from faulty sensor input
• Reduced drivability in BMW 550i, 650i, 750i, X5, and X6 applications

Installation Notes and Tips

Verify the connector style and OE part number before installation. For best results, inspect the intake tract, air filter housing, and related wiring for contamination or damage before replacing the sensor. Confirm the exact vehicle application by year, model, and notes, especially on the 2019 BMW X5 sensor-only listing.

Quality Assurance

Walker Products manufactures engine sensors and fuel system components to meet or exceed OEM standards and specifications. The company supports production with in-house engineering, product management, and technical support, and operates as an ISO 9001/IATF16949 certified manufacturer.