Walker
Walker Mass Air Flow Sensor

Walker 245-1270 Mass Air Flow Sensor

Brand Walker 245-1270
Connector Gender Female
Housing Included No
Mounting Hardware Included Yes
Terminal Quantity 5
Product line Walker Mass Air Flow Sensor
Fits Mercedes-Benz · 2 vehicles

OE-standard quality. Built to meet or exceed OEM specifications.

Five-terminal design. Supports precise airflow signal output.

Connector included. Female connector with mounting hardware.

Cross-references Standard Ignition MAS0428, 19701M and 0000941248 for the same application. See all 5.

$61.60Free shipping
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Walker Mass Air Flow Sensor 245-1270

Walker Mass Air Flow Sensor 245-1270 is built for precise air measurement in the engine management system. It is a direct-fit replacement for select Mercedes-Benz applications, including 1998-1999 Mercedes-Benz E300, and is designed to support accurate fuel delivery and drivability.

Key Features

  • Mass air flow sensor for emission control and engine management systems
  • Fits 1998-1999 Mercedes-Benz E300, N/A
  • 5-terminal female connector
  • Mounting hardware included
  • No housing included
  • Walker Products engineering and manufacturing support
  • ISO 9001/IATF16949 certified manufacturing environment

Product Details

The Walker Mass Air Flow Sensor line is part of Walker Products’ engine sensor offering, backed by decades of fuel system and aftermarket experience. Part number 245-1270 is engineered to meet or exceed OEM standards and specifications, with attention to application accuracy, product management, and technical support. This part cross-references Standard Ignition MAS0428 for the same application.

For Mercedes-Benz E300 models from 1998-1999, this mass air flow sensor helps the engine control module read incoming air volume so the fuel system can maintain proper air-fuel balance. Walker 245-1270 is a practical replacement choice when restoring drivability on the Mercedes-Benz E300, especially when the original sensor is no longer reading correctly.

Common Issues This Part May Address

  • Rough idle caused by inaccurate airflow readings
  • Hesitation or stumble during acceleration
  • Reduced fuel economy from incorrect fuel metering
  • Check engine light related to airflow sensor performance
  • Hard starting or poor throttle response

Installation Notes

Verify connector style, terminal count, and application match before installation. This sensor uses a female 5-terminal connector and does not include a housing. Confirm the intake tract and electrical connection are clean and free of damage before installing the replacement sensor on the Mercedes-Benz E300.

Quality Assurance

Walker Products manufactures engine sensors to meet or exceed OEM standards and specifications. The company supports production with in-house engineering, product management, and technical documentation, and operates under ISO 9001/IATF16949 certification.

This part fits 2 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
1999Mercedes-BenzE3003.0LL6N/AWalker Mass Air Flow Sensor
1998Mercedes-BenzE3003.0LL6N/AWalker Mass Air Flow Sensor
Directly replaces or cross-references 5 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Standard Ignition — MAS042819701M00009412487410213MF21370