Walker 245-1403 Mass Air Flow Sensor

Walker Mass Air Flow Sensor for Nissan and INFINITI

Walker Mass Air Flow Sensor 245-1403 is a direct-fit engine management replacement for select Nissan and INFINITI applications. It is built with a 5-terminal female connector, includes the housing, and includes mounting hardware for a cleaner service replacement.

Key Features

• Walker Mass Air Flow Sensor, part number 245-1403
• Housing included for a complete sensor assembly replacement
• Mounting hardware included
• 5-terminal female connector
• OE-style replacement for select Nissan Murano, Altima, Rogue, Pathfinder, Maxima, Quest, X-Trail, and INFINITI QX60 applications
• Cross-reference: Nissan 226803VA0A

Product Details

Walker Products has supplied fuel system and engine sensor components since 1946, with manufacturing and engineering support focused on meeting or exceeding OEM standards and specifications. The Walker Mass Air Flow Sensor line is part of that engine management offering, giving technicians and vehicle owners a replacement option for air metering issues on Nissan and INFINITI platforms. Part number 245-1403 is listed for 2014-2019 Nissan and INFINITI fitments, including 2014-2016 Nissan Rogue, 2015-2019 Nissan Murano, 2015-2018 Nissan Altima, 2016-2017 Nissan Quest, 2016-2017 Nissan Rogue, 2016-2017 Nissan X-Trail, 2016 Nissan Maxima, 2016 Nissan Pathfinder, and 2016 INFINITI QX60. This part cross-references Nissan 226803VA0A for the same application.

What It Helps Fix

• Rough idle caused by inaccurate incoming air measurement
• Hesitation or sluggish throttle response
• Check engine light related to mass air flow sensor faults
• Hard starting or unstable air-fuel control
• Poor drivability from a contaminated or failing MAF sensor

Installation Notes and Tips

Verify the connector style, terminal count, and vehicle build date before ordering, especially on 2017 Rogue and X-Trail applications with production-date-specific notes. Confirm the original sensor housing configuration matches this replacement, and inspect the intake tract for dirt, oil residue, or air leaks before installing the new sensor. For best results, clear diagnostic trouble codes after installation and road test the vehicle.

Quality Assurance

Walker Products is an ISO 9001/IATF 16949 certified manufacturer with in-house product management and engineering support. Its engine sensor components are produced to meet or exceed OEM standards and specifications for consistent fit and function.