Walker 245-1129 Mass Air Flow Sensor

Walker Mass Air Flow Assembly for Nissan

Walker Mass Air Flow Assembly 245-1129 is a direct-fit mass air flow sensor assembly for select Nissan applications. It is built with a housing included and a 3-terminal female connector layout for a straightforward replacement on the listed vehicles.

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 sensor offering for drivers and repair shops servicing Nissan Altima and Nissan 240SX models.

• Mass air flow sensor assembly with housing included
• 3-terminal design with female connector
• Direct replacement for select Nissan Altima and Nissan 240SX applications
• Built by Walker, a long-standing engine sensor and fuel system manufacturer
• Cross-reference: Delphi AF10208

Detailed Product Overview

Part number 245-1129 is designed for 1995-1998 Nissan 240SX and 1996-2001 Nissan Altima applications listed in the fitment data. It measures incoming air so the engine control system can calculate fuel delivery more accurately, making it an important component in drivability and emissions management. If you are replacing a failing Nissan Altima mass air flow sensor or servicing a Nissan 240SX with airflow-related faults, this Walker assembly provides the correct connector style and housing configuration for the specified vehicles.

Common Issues This Part May Address

• Rough idle or unstable engine speed
• Hesitation during acceleration
• Lean or rich air-fuel mixture concerns
• Check engine light related to airflow sensor readings
• Poor throttle response on Nissan Altima or Nissan 240SX models

Installation Notes and Tips

Verify connector style, terminal count, and housing configuration before installation. Inspect the intake tract for contamination, damaged wiring, or air leaks that can affect sensor readings. Use the listed fitment only: Fits 1998-2001 Nissan Altima, N/A; Fits 1995-1998 Nissan 240SX, N/A; Fits 1996-1997 Nissan Altima, N/A. Part number 245-1129 should be matched to the vehicle application and existing sensor layout before replacement.

Quality Assurance

Walker Products states that its engine sensors and fuel system components are manufactured to meet or exceed OEM standards and specifications. The company is ISO 9001/IATF16949 certified and supports its products with internal manufacturing, engineering, and technical documentation resources.