Walker 245-1135 Mass Air Flow Sensor

Walker Mass Air Flow Assembly 245-1135

Walker Mass Air Flow Assembly 245-1135 is a direct-fit mass air flow sensor assembly for select Nissan, INFINITI, and Mercury applications. It is built with a housing included and a 3-terminal female connector layout for service on vehicles that need accurate airflow signal input for engine management.

Walker Products has supplied fuel system and engine sensor components since 1946, with manufacturing and engineering support focused on meeting OEM standards and specifications. The Walker Mass Air Flow Assembly line is built for accurate vehicle application coverage and dependable replacement fitment.

Key Features

• Mass air flow sensor assembly with housing included
• 3-terminal design with female connector
• Direct replacement format for select Nissan Pathfinder, Nissan Frontier, Nissan Xterra, Nissan Quest, Nissan Pickup, INFINITI QX4, and Mercury Villager applications
• Walker part number 245-1135 for catalog and fitment lookup
• Engineered to meet or exceed OEM standards and specifications

Product Details

This Walker Mass Air Flow Assembly 245-1135 is used to measure incoming air so the engine control system can manage fuel delivery more accurately. For vehicles such as the 1998-2000 Nissan Pathfinder, 1999-2004 Nissan Frontier, and 2000-2004 Nissan Xterra, correct airflow sensing is important for stable drivability and proper engine performance. This part cross-references Standard Ignition MAS0133 for the same application.

What It Helps Address

• Rough idle caused by inaccurate airflow signal input
• Hesitation during acceleration
• Hard starting related to air metering faults
• Check engine light conditions tied to mass air flow sensor issues
• Fuel trim problems from incorrect air measurement

Installation Notes

Verify connector style, terminal count, and housing configuration before installation. This assembly uses a female connector and does not include mounting hardware. Confirm vehicle application by year, make, and model before ordering, especially for Nissan Pickup, Nissan Pathfinder, and INFINITI QX4 coverage.

Quality Assurance

Walker Products is an ISO 9001/IATF 16949 certified manufacturer with in-house product management and engineering support. The company focuses on accurate vehicle applications, technical documentation, and engine sensor production that aligns with OEM-level specifications.

Fitment

• Fits 1999-2004 Nissan Frontier, N/A
• Fits 2001-2004 Nissan Pickup, N/A
• Fits 2000-2004 Nissan Xterra, N/A
• Fits 1999-2002 Mercury Villager, N/A
• Fits 1999-2002 Nissan Quest, N/A
• Fits 1998-2000 INFINITI QX4, N/A
• Fits 1998-2000 Nissan Pathfinder, N/A
• Fits 1998-2000 Nissan Pickup, N/A