Walker 245-1244 Mass Air Flow Sensor

Walker Mass Air Flow Sensor 245-1244

Restore accurate airflow measurement with the Walker Mass Air Flow Sensor 245-1244. This replacement sensor is built for select Lexus, Toyota, Subaru, Scion, Suzuki, and Pontiac applications, including popular models such as the Toyota 4Runner, Toyota Camry, Lexus RX350, and Subaru WRX STI.

Walker Products has supplied fuel system and engine management components since 1946, with manufacturing and engineering support focused on OE-level fit and function. The Walker Mass Air Flow Sensor line is part of that broader engine sensor portfolio, giving you a direct replacement option for vehicles that rely on precise air metering for drivability and emissions control.

Key Features

• Mass air flow sensor for emission control and engine management applications
• 5-terminal female connector
• Mounting hardware included
• Housing not included
• Built for select Lexus, Toyota, Subaru, Scion, Suzuki, and Pontiac fitments
• Part number 245-1244 for easy identification

Detailed Description

Walker 245-1244 is a mass air flow sensor replacement for a wide range of import and domestic vehicles, including Toyota Corolla, Toyota Highlander, Lexus ES350, Lexus NX300, and Subaru Forester applications. It is intended for sensor-only service where the original housing is reused, and it follows the fitment and connector requirements listed for the application.

This part cross-references Standard Ignition MAS0314 and Spectra Premium MA320 for the same application. If you are searching for a Walker mass air flow sensor for Toyota 4Runner, Lexus IS350, or Subaru Outback service, 245-1244 is the part number to verify against your vehicle listing.

What It Helps Address

• Rough idle caused by inaccurate airflow readings
• Hesitation or poor throttle response
• Check engine light related to air metering faults
• Fuel trim issues from incorrect sensor output
• Driveability problems on affected Lexus, Toyota, and Subaru models

Installation Notes and Tips

Confirm the connector style, terminal count, and application notes before installation. This sensor uses a female connector and 5 terminals, and the housing is not included, so reuse the original housing where required. Review the vehicle-specific notes carefully, including sensor-only listings and date restrictions such as the 2019 Toyota RAV4 application noted through 11/2018.

For fitment, verify the exact model and year. Examples include Fits 2010-2020 Toyota 4Runner, N/A; Fits 2014-2020 Lexus IS350, N/A; Fits 2008-2015 Subaru Outback, N/A; and Fits 2012-2017 Toyota Camry, N/A.

Quality Assurance

Walker Products has been serving the automotive aftermarket since 1946 and operates with ISO 9001/IATF16949 certification. The company states that its products are manufactured to meet or exceed OEM standards and specifications, with engineering and technical support backing product accuracy and application data.