Walker 245-1120 Mass Air Flow Sensor

Walker Mass Air Flow Assembly 245-1120

Walker Mass Air Flow Assembly 245-1120 is a direct-fit engine management sensor assembly for select BMW, Land Rover, Hyundai, Suzuki, and Volvo applications. Built with a housing included and a 3-terminal female connector, it supports accurate airflow measurement for proper fuel delivery and drivability.

Key Features

• Mass air flow sensor assembly for emission control and engine management applications
• Housing included for a complete assembly-style replacement
• 3-terminal female connector
• Fits select BMW 320i, 325i, 525i, and Z3 applications
• Also fits select Land Rover Freelander, Hyundai Sonata, Suzuki Verona, and Volvo S40/V40 applications
• Walker part number 245-1120 for catalog and cross-reference use

Product Details

Walker Mass Air Flow Assembly 245-1120 is part of the Walker Mass Air Flow Assembly line, a product family focused on engine sensor and fuel system replacement parts. Walker Products has supplied automotive fuel system components since 1946 and manufactures to meet or exceed OEM standards and specifications, with engineering and technical support backing production accuracy. This assembly is built for vehicles that require a complete mass air flow sensor housing and sensor unit in one service part.

Compatible With select 1999-2006 BMW 323i, 323Ci, 323ti, 325Ci, 325i, 325xi, 328Ci, 328i, 525i, Z3, and 320i applications; select 1999-2006 Land Rover Freelander applications; select 1999-2000 Hyundai Sonata applications; select 2004-2006 Suzuki Verona applications; and select 2000 Volvo S40 and V40 applications. This part cross-references Delphi AF10185 and Standard Ignition MAS0159 for the same application.

Common Replacement Symptoms

• Rough idle or unstable engine speed
• Poor throttle response during acceleration
• Check engine light related to airflow or fuel trim faults
• Reduced fuel economy from incorrect air-fuel calculation
• Hard starting or hesitation under load

Installation Notes

Verify the connector style, terminal count, and housing configuration before installation. This unit uses a female connector and 3 terminals, and mounting hardware is not included. Confirm exact vehicle application by year, make, model, and engine management configuration, especially on BMW 325Ci and 325i applications with date-specific fitment notes.

Quality Assurance

Walker Products is ISO 9001 and IATF 16949 certified and supports its engine sensor products with in-house manufacturing, product management, engineering, and technical documentation. The 245-1120 is produced to align with OEM-level specifications for the listed applications.