Walker 245-1573 Mass Air Flow Sensor

Walker Mass Air Flow Sensor 245-1573

Walker Mass Air Flow Sensor 245-1573 is a direct-fit engine management sensor for select Nissan and INFINITI applications. It helps provide the airflow signal the engine control system uses to manage fuel delivery and drivability.

Compatible With 2020-2026 Nissan Frontier, 2023-2025 Nissan Z, 2020-2024 INFINITI Q50, 2020-2023 Nissan NV350 Urvan, 2020-2022 INFINITI Q60, plus 2016-2019 INFINITI Q50 and 2017-2019 INFINITI Q60.

Walker Mass Air Flow Sensor Line

The Walker Mass Air Flow Sensor line is part of Walker Products’ engine sensor offering. Walker has supplied fuel system and engine management components since 1946 and manufactures to meet or exceed OEM standards and specifications, with engineering and technical support behind product accuracy and application coverage.

Key Features

• Mass air flow sensor for engine air measurement and fuel control input
• Application-specific fitment for select Nissan Frontier, Nissan Z, INFINITI Q50, INFINITI Q60, and Nissan NV350 Urvan models
• Built by Walker Products, an ISO 9001/IATF16949 certified manufacturer
• Part number 245-1573 for catalog and service lookup
• Cross-reference: Delphi AF10660 and Standard Ignition MAS0476

Detailed Description

Walker 245-1573 is a mass air flow sensor used in the engine management system to report incoming air volume to the vehicle computer. Accurate airflow data is important for fuel metering, idle quality, throttle response, and emissions control. This part is listed for 2020-2026 Nissan Frontier, 2023-2025 Nissan Z, 2020-2024 INFINITI Q50, 2020-2023 Nissan NV350 Urvan, 2020-2022 INFINITI Q60, as well as 2016-2019 INFINITI Q50 and 2017-2019 INFINITI Q60. If you are replacing a failing MAF sensor on a Nissan Frontier or INFINITI Q50, 245-1573 provides a cataloged replacement option for the specified applications.

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 faults
• Incorrect fuel delivery from bad air measurement data
• Driveability issues on Nissan Frontier, Nissan Z, INFINITI Q50, INFINITI Q60, and Nissan NV350 Urvan applications

Installation Notes and Tips

Verify the connector style, engine application, and model year before installation. Inspect the intake tract for leaks, contamination, or damaged wiring before replacing the sensor. Clear diagnostic trouble codes after installation and confirm the repair with a road test and scan tool data review.

Quality Assurance

Walker Products manufactures engine sensors and fuel system components to meet or exceed OEM standards and specifications. The company backs its products with in-house manufacturing, product management, engineering, and technical support, and operates under ISO 9001/IATF16949 certification.