Mass Air Flow Sensor for Clasico, TT, Golf, Jetta, Passat, A4+More MA128

Mass Air Flow Sensor for Clasico, TT, Golf, Jetta, Passat, A4 and More MA128

This mass air flow sensor measures the volume of air entering the engine and reports it to the ECU so fuel delivery stays accurate; it cross-references OEM part number MA128.

Overview

The MA128 mass air flow sensor is a direct-fit replacement that restores accurate air measurement on compatible Volkswagen and Audi vehicles. A failing mass air flow sensor can cause rough idle, hesitation, and poor fuel economy, and this unit is built to bring those readings back in line. It suits drivers and shops handling routine maintenance or diagnosing driveability faults.

Built For Performance

• Housing and connector molded to match the original MA128 footprint
• Electronic sensing element calibrated for consistent air volume readings
• Sealed connector housing resists moisture and vibration
• Plug-in installation with no rewiring required
• Cross-referenced to OEM number MA128 for easy verification

Fits These Machines

• for Volkswagen Clasico
• for Audi TT
• for Volkswagen Golf
• for Volkswagen Jetta
• for Volkswagen Passat
• for Audi A4

On-The-Job Use

• Restoring idle quality on high-mileage Volkswagen and Audi engines
• Diagnosing lean or rich fuel trim codes
• Routine intake maintenance and sensor replacement
• Shop repair work on driveability complaints

Specs At A Glance

Good To Know

Q: What are common signs of a bad mass air flow sensor? A: Rough idle, hesitation under acceleration, black exhaust smoke, and a check engine light are typical. Replacing the sensor often clears these symptoms when the fault code points to air metering.

Q: Does this sensor need programming after installation? A: Most vehicles accept this sensor as a plug-and-play replacement with no programming. Clear the fault codes and take a short drive so the ECU can relearn fuel trims.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.