Walker 245-1589 Mass Air Flow Sensor

Sensor Only Mass Air Flow Sensor

Walker 245-1589 is a sensor-only mass air flow sensor for applications that require a direct sensor replacement rather than a complete housing assembly. It is a new, tested replacement built for fit, form, and function, with a black finish and a single connector.

Key Features

• Sensor-only design for a faster, more economical MAF repair path.
• 100% new, never remanufactured construction.
• Programmed and tested before release for fit, form, and function.
• Custom tuned flow characteristics across the full flow spectrum.
• OEM-quality components and production testing from Walker Products.

Product Details

This Walker mass air flow sensor is part of the Sensor Only line, which focuses on replacement sensors without the housing assembly. That makes it a practical choice when the housing is serviceable and the repair calls for the sensor itself. Walker 245-1589 is engineered and verified to meet OE-style fuel trim expectations, and the part number 245-1589 is backed by production testing and on-vehicle validation. This part cross-references Standard Ignition MAS0508 for the same application.

What It Helps Fix

• Rough idle caused by inaccurate airflow readings.
• Hesitation or poor throttle response from a faulty MAF sensor.
• Check engine lights related to airflow measurement faults.
• Fuel trim issues caused by incorrect sensor calibration.
• Driveability problems after contamination or sensor wear.

Installation Notes

Fits 2019-2026 Nissan Altima, N/A; 2025-2026 Nissan Kicks, N/A; 2022-2026 Nissan Pathfinder, N/A; 2020-2026 Nissan Sentra, N/A; 2021 Nissan Rogue, N/A; 2023 Nissan X-Trail, N/A; 2019-2025 INFINITI QX50, N/A; 2022-2025 INFINITI QX55, N/A; 2022-2026 INFINITI QX60, N/A. Sensor-only replacement is typically used when the housing remains in serviceable condition. Clean the connector area and surrounding air path before installation to reduce contamination risk.

Quality Assurance

Walker Products has supplied automotive fuel system and engine sensor components since 1946 and operates as an ISO 9001 / IATF 16949 certified manufacturer. The 245-1589 is produced as a new replacement sensor and tested for fit, form, and function before release.