Standard Ignition MAS0518 Mass Air Flow Sensor

Overview of Standard Ignition Mass Air Flow Sensor MAS0518

The Standard Ignition MAS0518 Mass Air Flow Sensor is designed for precise air measurement in Subaru Forester and WRX models. This new sensor ensures accurate airflow data for optimal engine performance and emission control.

• Attachment Method: Bolt on for secure installation
• Connector Gender: Female with one oval-shaped plug-in connector
• Number of Bolt Holes: 2 for stable mounting
• Terminal Type: 5 male blade terminals for reliable electrical connection
• Housing Included: No, sensor only
• New part, not remanufactured

Detailed Product Description

The MAS0518 Mass Air Flow Sensor from Standard Ignition is engineered to provide accurate measurement of the air entering the engine, a critical factor for fuel injection and emission control systems. This sensor features a bolt-on attachment method with two bolt holes, ensuring a secure fit in the air intake system of Subaru Forester and WRX vehicles. The sensor includes a single female oval-shaped connector designed for a plug-in connection, facilitating straightforward installation and reliable electrical contact. Equipped with five male blade terminals, this sensor supports consistent signal transmission to the engine control unit. Note that this product is sold as the sensor only, without housing.

Compatible Vehicles and Applications

This mass air flow sensor is compatible with the following Subaru models:

• Subaru Forester
• Subaru WRX

It is specifically designed to replace the original equipment sensor, helping to maintain proper air-fuel mixture and reduce emissions.

Common Issues Addressed by MAS0518 Sensor

• Engine hesitation or stalling due to incorrect air measurement
• Reduced fuel efficiency caused by inaccurate airflow data
• Check engine light triggered by faulty mass air flow sensor readings
• Rough idling or poor acceleration performance
• Emission test failures related to air intake sensor malfunction

Installation Notes and Tips

Installation of the Standard Ignition MAS0518 sensor requires unbolting the old sensor and bolting on the new one using the two bolt holes provided. The oval-shaped female connector plugs directly into the vehicle’s wiring harness. Ensure the connector is fully seated to avoid electrical issues. Since the sensor is sold without housing, reuse the existing housing from the original sensor. It is recommended to handle the sensor carefully to avoid damage to the terminals and to verify compatibility with your specific Subaru Forester or WRX model year before installation.

Quality Assurance and Warranty

Standard Ignition provides this MAS0518 Mass Air Flow Sensor as a new, direct replacement part manufactured to meet or exceed OEM specifications. The sensor undergoes quality control testing to ensure reliable performance and durability. Warranty coverage details should be confirmed with the point of purchase or Standard Ignition documentation.