Walker 245-1141 Mass Air Flow Sensor

Walker Mass Air Flow Assembly for BMW

The Walker Mass Air Flow Assembly is a direct-fit engine management component for select BMW applications. Built with a housing included and a 4-terminal female connector, this assembly supports accurate airflow measurement for drivability and fuel control on compatible BMW 325i, 325is, 525i, 525iT, 530i, and M3 models.

Key Features

• Walker Mass Air Flow Assembly, part number 245-1141
• Housing included for a complete sensor assembly replacement
• 4-terminal female connector
• Engineered to meet or exceed OEM standards and specifications
• Backed by Walker Products’ in-house manufacturing, engineering, and technical support
• ISO 9001/IATF16949 certified manufacturing process

Product Details

Walker Products has supplied fuel system and engine sensor components since 1946, with a focus on accurate production, application coverage, and technical support. The Walker Mass Air Flow Assembly line is built for vehicles that require dependable airflow signal input to the engine control system. Part number 245-1141 is listed for 1992-1995 BMW 325i, 1992-1995 BMW 325is, 1993-1995 BMW 525i, 1993 BMW 525iT, 1994-1995 BMW 530i, 1995 BMW M3, and 1996-1997 BMW 325i. This part cross-references Standard Ignition MAS0390 for the same application.

Common Issues This Part Can Address

• Rough idle caused by inaccurate airflow readings
• Hesitation or poor throttle response
• Check engine light related to mass air flow sensor faults
• Fuel trim problems from incorrect air measurement
• Driveability issues on BMW 325i, BMW 525i, and BMW M3 applications

Installation Notes

Verify connector style, terminal count, and housing configuration before installation. This assembly uses a female connector and includes the housing; mounting hardware is not included. Confirm the vehicle year and model match the listed fitment before replacing the original sensor assembly. For best results, inspect the intake tract, air filter, and related wiring for contamination or damage during service.

Quality Assurance

Walker Products manufactures engine sensors to meet or exceed OEM standards and specifications. The company supports production with its own manufacturing, product management, and engineering staff, and operates under ISO 9001/IATF16949 certification for quality control.