Delphi AF10538 Mass Air Flow Sensor

Delphi AF10538 Mass Air Flow Sensor

Delphi AF10538 is a standard replacement mass air flow sensor probe for select Subaru applications. Built from Delphi’s OE heritage and supplier experience, it is made for accurate airflow signal delivery in vehicles that use a probe-only MAF design.

Fits 2016-2021 Subaru WRX and 2016-2018 Subaru Forester, with additional coverage for 2014-2015 Subaru Forester and 2015 Subaru WRX when equipped with probe-only Mass Air Flow Sensors.

Key Features

• Mass air flow sensor, probe only
• Standard replacement grade for direct service use
• Black and silver housing finish
• 5-terminal, male terminal design with 1 female rectangle connector
• Bolt-on mounting type
• No housing included and no wiring harness included
• Package includes the sensor probe and instruction sheet

Detailed Description

The Delphi AF10538 mass air flow sensor is engineered for Subaru WRX and Subaru Forester models that use a probe-only MAF configuration. It measures incoming air so the engine control system can calculate fuel delivery and maintain proper drivability. Delphi’s OE background and long-term supplier experience are reflected in the sensor’s standard replacement construction and application-focused design. This part cross-references Hitachi Automotive MAF0124 and Standard Ignition MAS0518 for the same application.

Common Issues This Part Can Address

• Rough idle caused by inaccurate airflow readings
• Hesitation during acceleration
• Check engine light related to mass air flow sensor faults
• Poor fuel mixture control from a failing MAF sensor
• Driveability problems on Subaru WRX or Forester models with probe-only sensor setups

Installation Notes and Tips

Confirm the vehicle uses a probe-only Mass Air Flow Sensor before ordering. Verify the connector shape, terminal count, and bolt-on mounting style against the original part. For best results, inspect the intake tract for contamination or air leaks before installing the Delphi AF10538, and follow the included instruction sheet during service.

Quality Assurance

Delphi builds this replacement sensor using OE-focused engineering knowledge developed through decades of supplying major automakers. The AF10538 is intended as a standard replacement part for the listed Subaru WRX and Forester applications.