Standard Ignition MAS0409 Mass Air Flow Sensor

Reliable Mass Air Flow Sensor for Audi and Volkswagen Vehicles

The Standard Ignition MAS0409 Mass Air Flow Sensor is designed to provide accurate airflow measurement for improved engine performance. Compatible with select Audi and Volkswagen models, this sensor helps maintain optimal air-fuel mixture for efficient combustion.

Key Features of Standard Ignition MAS0409

• Precision-engineered for accurate airflow measurement
• Compatible with Audi A4, A4 Quattro, and Volkswagen Beetle, Golf, Jetta, Passat, TT
• Direct replacement part number MAS0409 for easy identification
• Durable construction to withstand engine environment
• Ensures proper engine management system operation

Detailed Product Description

The Standard Ignition MAS0409 Mass Air Flow Sensor is an essential component in the emission control system, responsible for measuring the volume and density of air entering the engine. This data is critical for the engine control unit (ECU) to calculate the correct amount of fuel for combustion. Designed specifically for Audi and Volkswagen models such as the A4, A4 Quattro, Beetle, Golf, Jetta, Passat, and TT, this sensor meets OEM specifications to ensure compatibility and reliable performance. The part number MAS0409 identifies this sensor as a direct fit replacement, simplifying maintenance and repair tasks.

Common Applications and Issues Addressed

• Restores accurate air-fuel ratio for improved engine efficiency
• Resolves rough idling and engine hesitation problems
• Eliminates check engine light triggers related to airflow sensor faults
• Improves fuel economy by providing precise airflow data
• Helps reduce emissions by maintaining proper combustion

Installation Notes and Tips

• Ensure the engine is cool before installation to avoid injury
• Disconnect the battery to prevent electrical shorts during replacement
• Carefully remove the old sensor and avoid damaging the air intake system
• Install the MAS0409 sensor securely and reconnect all electrical connectors
• Clear any diagnostic trouble codes after installation to reset the ECU

Quality Assurance and Warranty Information

Standard Ignition parts are manufactured to meet or exceed OEM standards, ensuring reliable performance and durability. The MAS0409 Mass Air Flow Sensor undergoes rigorous quality control testing to maintain consistent functionality. Warranty coverage details are provided by Standard Ignition and typically include protection against defects in materials and workmanship for a specified period.