Spectra MA139 Premium Mass Air Flow Sensor with Platinum Resistance Thermometer

The Spectra Premium MA139 is a direct-fit replacement mass air flow (MAF) sensor engineered to restore precise air measurement and optimal engine management. Designed as a true OE-equivalent replacement, this sensor communicates accurate intake air volume data to the engine control module (ECM) to ensure proper fuel trim, throttle response, and emissions performance.

Key Features:

• Programmable ceramic circuit board constructed with a premium-grade silicon coating for reliable protection against extreme under-hood temperature fluctuations
• Silicon coating shields internal components from road vibrations and harsh operating environments
• All-platinum resistance thermometer (PRT) sensors provide superior accuracy and longevity compared to standard thermometer elements
• Optimized circuit design delivers faster signal response and improved signal consistency for precise air/fuel ratio management
• Direct OE replacement design for hassle-free installation with no modifications required

The Spectra Premium MA139 mass air flow sensor is built to meet or exceed original equipment specifications, helping restore fuel economy, smooth idle, and proper throttle response. A failing MAF sensor can trigger check engine lights, rough idle, poor acceleration, and increased fuel consumption — replacing it with the MA139 addresses these symptoms with a quality, long-lasting solution.