Delphi AF10345 Mass Air Flow Sensor

Mass Air Flow Sensor for Subaru Applications

Delphi AF10345 is a premium mass air flow sensor probe for Subaru vehicles that use a probe-only MAF design. It is built with a black housing, a 5-pin male terminal layout, and a single rectangular female connector for a direct bolt-on replacement.

With OE heritage built into every aftermarket part, Delphi draws on more than a century of original equipment experience. This AF10345 mass air flow sensor is a practical choice for Subaru WRX STI, Legacy, Outback, Forester, Crosstrek, and Impreza applications that require the correct probe-style sensor configuration.

Key Features

• Delphi AF10345 mass air flow sensor for probe-only applications
• Black finish with bolt-on mounting type
• 1 rectangular female connector, 5-pin terminal design
• Probe only; housing not included
• Wiring harness not included
• Premium item grade for OE-style replacement needs
• Package contents: mass air flow sensor probe and instruction sheet

Detailed Product Overview

The Delphi AF10345 is a mass air flow sensor designed to measure incoming air for engine management systems on select Subaru models. Accurate airflow input helps the ECU maintain proper fuel delivery, idle quality, and drivability. This part cross-references DENSO Auto Parts (e.g., 197-6130) for the same application.

Use this Delphi AF10345 when replacing a probe-only MAF sensor on Subaru WRX STI, Legacy, Outback, Forester, Crosstrek, or Impreza vehicles within the listed model years. It is also referenced by part numbers such as 22680 AA38A and MAS0317.

What It Helps Address

• Rough idle caused by inaccurate airflow readings
• Hesitation or stumble during acceleration
• Check engine light related to mass air flow sensor performance
• Poor fuel trim behavior from incorrect air measurement
• Driveability issues on Subaru probe-only MAF applications

Installation Notes and Tips

Confirm the vehicle uses a probe-only mass air flow sensor before ordering. This unit mounts with a bolt-on design and uses a single rectangular connector with 5 terminals. Compare the connector shape, terminal count, and sensor style to the original part before installation on Subaru Forester, Impreza, Legacy, Outback, Crosstrek, or WRX STI applications.

For best results, inspect the intake tract for contamination, damaged wiring, or air leaks before replacing the sensor. Follow the included instruction sheet and verify all electrical connections are secure after installation.

Quality Assurance

Delphi brings OE heritage and more than 100 years of original equipment experience to its aftermarket sensor line. That background supports consistent fit and function for the AF10345 in the specified Subaru applications.