Holstein 2MAF0004 Mass Air Flow Sensor

Mass Air Flow Sensor Overview

Holstein Parts 2MAF0004 is a mass air flow sensor for select Chevrolet and Buick applications. It is a sensor-only replacement for direct service on covered vehicles, including Chevrolet Trax, Chevrolet Sonic, Chevrolet Cruze, Buick Encore, and Buick Verano.

Key Features

• Mass air flow sensor replacement for emission control service
• Sensor-only design for the listed applications
• Holstein Parts 2MAF0004 for direct part matching
• Fits select Chevrolet and Buick models across multiple model years

Detailed Description

This Holstein Parts mass air flow sensor measures incoming air so the engine control system can manage fuel delivery and airflow calculations. It fits 2012-2015 Chevrolet Cruze, 2012-2016 Chevrolet Sonic, 2013-2021 Chevrolet Trax, 2013-2015 Buick Encore, 2012-2016 Buick Verano, 2016 Chevrolet Cruze Limited, 2017 Chevrolet Sonic, 2017 Buick Verano, and 2020 Buick Encore. The part number 2MAF0004 is useful when matching an exact replacement for these Chevrolet Trax and Chevrolet Sonic applications.

What It Is Used For

• Restoring accurate airflow measurement
• Addressing rough idle caused by incorrect air metering
• Correcting fuel trim issues tied to sensor output
• Replacing a failed sensor on emission control systems

Installation Notes and Tips

Verify the connector style and engine application against the original sensor before ordering. Use the vehicle notes in the fitment table, especially the sensor-only designation, to confirm the correct replacement. The part number 2MAF0004 should be matched to the original unit and the listed fitment before installation.

Quality Assurance

Holstein Parts offers OE-style replacement coverage for this sensor line, and this part cross-references Bosch (e.g., 0280218419) for the same application.