Standard Ignition MAS0402 Mass Air Flow Sensor

Reliable Mass Air Flow Sensor for Audi and Volkswagen Vehicles

The Standard Ignition MAS0402 Mass Air Flow Sensor is designed to provide accurate airflow measurement for select Audi and Volkswagen models. This sensor helps maintain optimal engine performance and emissions control by delivering precise data to the engine control unit.

• Compatible with Audi A4, A4 Quattro, A5, A5 Quattro, A6, A6 Quattro, allroad, and Volkswagen Eos, Jetta, Q3, Q3 Quattro, Q5
• Part number MAS0402 ensures exact replacement fit
• Measures intake air volume for efficient fuel management
• Supports emission control system functionality
• Direct replacement for factory-installed mass air flow sensors

Product Details and Functionality

The Standard Ignition MAS0402 Mass Air Flow Sensor is engineered to accurately measure the amount of air entering the engine intake system. This data is critical for the engine control module to calculate the correct fuel injection volume, ensuring efficient combustion and reduced emissions. Compatible with a range of Audi and Volkswagen models, including the A4, A5, A6 series, and Q3 and Q5 SUVs, this sensor meets OEM specifications for fit and function. The part number MAS0402 identifies this sensor as a direct replacement, simplifying maintenance and repair.

Common Applications and Problem Resolution

• Restores proper air-fuel mixture for improved engine performance
• Resolves rough idling and engine hesitation issues
• Helps eliminate check engine light triggers related to airflow sensor faults
• Improves fuel economy by providing accurate airflow data
• Supports emission system compliance by maintaining sensor accuracy

Installation Notes and Tips

Installation of the MAS0402 Mass Air Flow Sensor requires basic automotive tools and knowledge. Before installation, disconnect the vehicle battery to prevent electrical shorts. Carefully remove the old sensor from the intake system, avoiding damage to the wiring harness. Install the new sensor in the same orientation and secure it firmly. After installation, clear any diagnostic trouble codes and verify proper sensor operation through a diagnostic scan tool.

Quality Assurance and Warranty Information

Standard Ignition manufactures the MAS0402 Mass Air Flow Sensor to meet or exceed OEM standards. Each sensor undergoes rigorous testing to ensure durability and accurate performance. While specific warranty details may vary, Standard Ignition typically offers a limited warranty covering defects in materials and workmanship, providing confidence in product reliability.