Motorad 3MF174 Mass Air Flow Sensor

Mass Air Flow Sensor for GM Applications

The MotoRad 3MF174 mass air flow sensor measures incoming air and sends the signal to the ECU for accurate fuel delivery. It is built for GM vehicles that need a direct-fit MAF sensor with a 5-wire, H-shaped female connector layout.

• Mass air flow sensor for engine air measurement and ECU input
• 5-wire design with 1 female connector, H shape
• Blade terminals, 5 terminal count, male terminal gender
• Engineered to reduce contamination and handle vibration
• Built to meet or exceed OEM specifications
• Manufactured in IATF16949 facilities

Detailed Fitment and Function

This MotoRad MAF sensor, part number 3MF174, is used to restore accurate airflow readings in GM vehicles such as the Chevrolet Malibu, Chevrolet Impala, Buick LaCrosse, and Pontiac G6. It supports proper air-fuel calculation by reporting intake airflow to the engine control unit, which is critical for drivability and emissions performance. This part cross-references GM OE numbers such as 917859 and 2131677 for the same application.

What It Helps Address

• Rough idle caused by inaccurate airflow readings
• Hesitation or stumble during acceleration
• Check engine lights related to MAF sensor performance
• Poor fuel mixture control from contaminated sensor output
• Driveability issues tied to vibration or sensor wear

Installation Notes

Verify connector shape, terminal count, and wire quantity before installation. This sensor uses a female H-style connector with blade terminals and does not include mounting hardware or a mounting bracket. Confirm vehicle application by year, make, and model before ordering the 3MF174.

Quality Assurance

MotoRad designs its engine management products to meet or exceed OEM specifications and manufactures them in IATF16949-certified facilities. The 3MF174 is backed by a limited lifetime warranty.