Walker 245-1258 Mass Air Flow Sensor

Walker Mass Air Flow Sensor 245-1258

The Walker Mass Air Flow Sensor 245-1258 is a direct-fit engine management sensor for select Infiniti and Nissan applications. It is built to meet or exceed OEM standards and specifications, with a 5-terminal female connector and mounting hardware included for a cleaner replacement job.

Walker Products has supplied fuel system and engine sensor components since 1946, and the Walker Mass Air Flow Sensor line reflects that focus on accurate vehicle applications and technical support. This part is intended for drivers replacing a failing MAF sensor on vehicles such as the Infiniti Q50 and Nissan Altima, Murano, Sentra, and Pathfinder.

Key Features

• Part number: 245-1258
• Mass air flow sensor for emission control and engine management systems
• 5-terminal female connector
• Mounting hardware included
• Housing not included
• Built to meet or exceed OEM standards and specifications
• Walker Mass Air Flow Sensor product line from an ISO 9001/IATF16949 certified manufacturer

Fitment Details

• Fits 2019 INFINITI Q50, sensor only.
• Fits 2014-2018 INFINITI Q50, Walker Mass Air Flow Sensor.
• Fits 2014-2018 INFINITI Q70, Walker Mass Air Flow Sensor.
• Fits 2014-2017 INFINITI QX60, Walker Mass Air Flow Sensor.
• Fits 2012-2013 INFINITI M35h, Walker Mass Air Flow Sensor.
• Fits 2013-2015 Nissan Altima, Walker Mass Air Flow Sensor.
• Fits 2016 Nissan Altima, fits vehicles up to October 2015; Walker Mass Air Flow Sensor.
• Fits 2016 Nissan Murano, Walker Mass Air Flow Sensor.
• Fits 2013-2015 Nissan Sentra, Walker Mass Air Flow Sensor.
• Fits 2016 Nissan Sentra, fits vehicles up to December 2015; Walker Mass Air Flow Sensor.
• Fits 2014-2015 Nissan Pathfinder, Walker Mass Air Flow Sensor.

What It Helps Address

• Rough idle caused by inaccurate airflow readings
• Hesitation or poor throttle response
• Check engine light related to mass air flow sensor faults
• Incorrect fuel delivery from bad airflow data
• Driveability issues on Infiniti Q50, Nissan Altima, Murano, Sentra, and Pathfinder applications

Installation Notes

Verify connector style, terminal count, and vehicle build date before installation. This part uses a 5-terminal female connector and includes mounting hardware, while the housing is not included. For 2016 Nissan Altima and 2016 Nissan Sentra applications, confirm the production cutoff noted in the fitment data before ordering. This part cross-references Hitachi Automotive MAF0102 and Standard Ignition MAS0339 for the same application.

Quality Assurance

Walker Products manufactures engine sensors and fuel system components to meet or exceed OEM requirements, supported by in-house manufacturing, engineering, product management, and technical documentation. The company is ISO 9001/IATF16949 certified and has long-standing aftermarket experience across fuel injection and engine management categories.