Walker 245-1264 Mass Air Flow Sensor

Walker Mass Air Flow Assembly for Infiniti Q45

Walker Mass Air Flow Assembly 245-1264 is a direct-fit mass air flow sensor assembly for select Infiniti Q45 applications. It is built for vehicles that use a 3-terminal female connector and includes mounting hardware for a cleaner replacement process.

Key Features

• Mass air flow sensor assembly for engine air measurement
• 3-terminal female connector
• Mounting hardware included
• Housing not included
• Walker part number 245-1264

Product Details

Walker Products has supplied fuel system and engine management components since 1946, with manufacturing and engineering support focused on meeting or exceeding OEM standards. The Walker Mass Air Flow Assembly line is part of that broader engine sensor offering, giving technicians a replacement option for air metering issues on Infiniti Q45 models. This part number, 245-1264, cross-references 5S2715 for the same application.

Compatible With 1990-1994 Infiniti Q45 and 1995 Infiniti Q45 built up to November 1994, this mass air flow sensor assembly supports accurate airflow signal input to the engine control system. It is a practical replacement when the original sensor is no longer reading airflow correctly or when drivability concerns point to a failed air metering component.

Common Issues This Part Can Address

• Rough idle caused by incorrect airflow readings
• Hesitation or stumble during acceleration
• Hard starting related to air metering faults
• Check engine light triggered by mass air flow sensor errors
• Poor fuel control from inaccurate sensor output

Installation Notes

Verify connector style, terminal count, and vehicle build date before installation. For the 1995 Infiniti Q45, confirm the vehicle was built up to November 1994. Inspect the intake tract for leaks, contamination, or damaged wiring before installing Walker 245-1264, and clear diagnostic codes after the repair.

Quality Assurance

Walker Products is ISO 9001 and IATF 16949 certified and supports its parts with in-house manufacturing, product management, engineering, and technical documentation. The brand focuses on producing engine management components to OEM-level standards and specifications.