Standard Ignition MAS0173 Mass Air Flow Sensor

Reliable Mass Air Flow Sensor for Infiniti and Nissan Vehicles

The Standard Ignition MAS0173 Mass Air Flow Sensor is designed to provide accurate airflow measurement for Infiniti Pathfinder and Nissan QX4 models. This sensor helps maintain optimal engine performance by ensuring precise air intake readings.

• Compatible with Infiniti Pathfinder and Nissan QX4 models
• OEM-quality replacement part number MAS0173
• Measures the volume and density of air entering the engine
• Ensures accurate fuel injection and engine timing
• Direct fit for easy installation without modifications

Product Overview and Functionality

The Standard Ignition MAS0173 Mass Air Flow Sensor plays a critical role in the emission control system by monitoring the amount of air entering the engine. This data is essential for the engine control unit (ECU) to calculate the correct fuel-to-air ratio, which impacts engine efficiency, emissions, and overall drivability. Designed specifically for Infiniti Pathfinder and Nissan QX4 vehicles, this sensor meets strict quality standards to ensure reliable operation and consistent performance.

Common Applications and Problem Resolution

This mass air flow sensor is used to address several engine performance issues related to inaccurate airflow measurement. It is commonly installed to resolve:

• Rough idling or engine stalling
• Poor fuel economy and increased emissions
• Check engine light triggered by airflow sensor faults
• Reduced engine power or hesitation during acceleration
• Difficulty starting the engine or inconsistent throttle response

Installation Notes and Tips

Installation of the Standard Ignition MAS0173 sensor is straightforward for qualified technicians. It is a direct replacement part that fits the air intake system of Infiniti Pathfinder and Nissan QX4 models without requiring additional modifications. When installing, ensure the sensor connector is securely attached and the sensor housing is clean and free of debris. It is recommended to inspect the air filter and intake duct for any damage or blockages during installation.

Quality Assurance and Warranty Information

Standard Ignition parts are manufactured to meet or exceed OEM specifications, providing dependable performance and durability. The MAS0173 Mass Air Flow Sensor undergoes rigorous testing to ensure accuracy and longevity. This part is backed by Standard Ignition's limited warranty, which covers defects in materials and workmanship under normal use conditions.