Walker 245-1147 Mass Air Flow Sensor

Walker Mass Air Flow Assembly for BMW

Walker Mass Air Flow Assembly Part Number 245-1147 is a direct-fit mass air flow sensor assembly for select BMW applications. It is built with a housing included and a 4-terminal female connector to support accurate airflow signal delivery for engine management on the listed vehicles.

Key Features

• Mass air flow sensor assembly from Walker
• Housing included for a complete assembly-style replacement
• 4-terminal female connector
• Built to meet or exceed OEM standards and specifications
• Backed by Walker Products engineering, product management, and technical support
• ISO 9001/IATF16949 certified manufacturing

Product Details

The Walker Mass Air Flow Assembly line is part of Walker Products’ engine management offering, which focuses on fuel system and sensor components for the automotive aftermarket. Part Number 245-1147 is intended for BMW 540i, BMW 740i, BMW 740iL, and BMW 840Ci applications listed below, including 1993-1998 BMW 740iL and 1994-1997 BMW 840Ci. This part cross-references Standard Ignition MAS0366 for the same application.

Compatible With: Fits 1994-1995 BMW 540i, N/A; Fits 1997-1998 BMW 540i, N/A; Fits 1993-1995 BMW 740i, N/A; Fits 1997-1998 BMW 740i, N/A; Fits 1993-1998 BMW 740iL, N/A; Fits 1994-1997 BMW 840Ci, N/A.

Common Symptoms Addressed

• Rough idle caused by inaccurate airflow readings
• Hesitation or poor throttle response
• Check engine light related to air metering faults
• Reduced fuel economy from incorrect fuel delivery calculations
• Driveability issues on BMW 540i, BMW 740i, BMW 740iL, and BMW 840Ci models

Installation Notes

Verify connector style, terminal count, and housing configuration before installation. This assembly uses a female connector and does not include mounting hardware. Confirm the vehicle application against the listed BMW fitment for the exact year and model before replacing the sensor.

Quality Assurance

Walker Products has supplied fuel system and engine sensor components since 1946 and manufactures to meet or exceed OEM standards and specifications. The company supports production with in-house engineering and technical resources, and its facilities are certified to ISO 9001/IATF16949 standards.