Walker 245-1669 Mass Air Flow Sensor

Overview

Walker 245-1669 is a sensor-only mass air flow sensor built as a standard replacement for specific Mazda applications. It is a new, programmed, and tested unit with a 4-wire, 4-terminal design and a female connector for direct sensor replacement.

Compatible with Mazda 3, CX-30, CX-50, CX-70, and CX-90 applications listed below, this Walker mass air flow sensor is part of the Sensor Only product line. The 245-1669 is intended for buyers who want a replacement sensor without the housing assembly.

Key Features

• Sensor-only design for replacement of the MAF sensing element
• Standard replacement construction with specific-fit application coverage
• Black plastic housing with oblong connector shape
• 4-wire, 4-terminal configuration with one connector
• New, programmed, and production-tested before release
• Wiring harness included

Product Details

Walker Products’ Sensor Only line focuses on replacement sensors rather than complete housing assemblies, giving installers a more economical service option when the housing is still serviceable. Part number 245-1669 uses a pin-style terminal layout, male terminals, and a female connector, with two mounting holes and a plastic housing. Walker’s MAF program is built around custom-tuned flow characteristics and production verification, and the brand states that many of these sensors are manufactured in the USA using OEM-quality components. This part cross-references Walker Products 245-1669 for the same application.

Common Issues This Part May Address

• Unstable idle caused by inaccurate airflow measurement
• Reduced fuel trim accuracy from a failing mass air flow sensor
• Driveability problems related to incorrect air metering
• Check engine light conditions tied to MAF sensor performance
• Service needs where the sensor element is replaced without the housing

Installation Notes

Confirm the connector style, terminal count, and sensor-only configuration before installation. The 245-1669 is a specific-fit part, so match the vehicle application and inspect the air inlet path and connector condition during service. Because this is a sensor-only design, it is commonly used when the housing does not need replacement.

Quality Assurance

Walker Products states that this MAF sensor is 100% new, not remanufactured, and is production-tested for fit, form, and function. The company also notes ISO 9001 and IATF 16949 manufacturing standards, along with on-vehicle verification for calibration.