Walker 245-1223 Mass Air Flow Sensor

Walker Mass Air Flow Assembly for Volvo

Walker Mass Air Flow Assembly 245-1223 is a direct-fit mass air flow sensor assembly for select 2001-2004 Volvo S40 and Volvo V40 models. It is built with a female connector, 3 terminals, and a housing included for a cleaner replacement on the intake side.

Walker Products has supplied fuel system and engine management components since 1946, with manufacturing and engineering support focused on OE-level specifications. The Walker Mass Air Flow Assembly line is aimed at accurate airflow measurement and dependable engine management performance.

Key Features

• Mass air flow sensor assembly for select Volvo S40 and Volvo V40 applications
• Walker part number 245-1223
• Housing included for a complete assembly-style replacement
• 3-terminal design with female connector
• Built by an ISO 9001/IATF16949 certified manufacturer
• Cross-reference: Delphi AF10196

Detailed Description

Walker 245-1223 is a mass air flow sensor assembly for 2001-2004 Volvo S40 and 2001-2004 Volvo V40 models. It measures incoming air so the engine control system can calculate fuel delivery more accurately, which is critical for drivability and emissions control. If you are searching for a Volvo S40 mass air flow sensor or a Volvo V40 MAF assembly, this part number is a direct application match for the listed vehicles.

This Walker Mass Air Flow Assembly uses a female connector and 3 terminals, and the housing is included. That makes it a practical replacement when the original sensor housing or assembly needs service. Part number 245-1223 also cross-references Delphi AF10196 for the same application.

What It Helps Address

• Rough idle caused by inaccurate airflow readings
• Hesitation or sluggish throttle response
• Check engine light related to mass air flow sensor faults
• Incorrect fuel trim from contaminated or failing MAF data
• Poor drivability on 2001-2004 Volvo S40 and Volvo V40 models

Installation Notes and Tips

Verify connector style, terminal count, and housing configuration before installation. Inspect the intake tract for air leaks, dirt, or oil contamination that can affect sensor readings. Clear diagnostic trouble codes after installation and confirm proper idle and throttle response during a road test.

Quality Assurance

Walker Products manufactures engine management components to meet or exceed OEM standards and specifications. The company supports production with in-house manufacturing, product management, engineering, and technical documentation for accurate vehicle application coverage.