Motorad 3MF139 Mass Air Flow Sensor With Housing Assembly

The Motorad 3MF139 is a direct-fit mass air flow (MAF) sensor with housing assembly, engineered to precisely measure the volume and density of air entering the engine and relay that data to the engine control unit (ECU). This accurate signal allows the ECU to calculate and deliver the correct fuel quantity, supporting efficient combustion, strong throttle response, and optimal fuel economy.

Key Features:

• Proprietary NTC Technology — Matched to OE resistance values for the most accurate signal to the ECU, resulting in an optimal fuel-to-air mixture
• Platinum-Infused Hot Wire Sensor — Resists corrosion and maintains a stable, consistent reading over the life of the sensor
• Double Wire Bonding — Upgraded internal construction protects against signal degradation caused by engine vibration
• Contamination-Resistant Design — Engineered to withstand harsh under-hood environments and maintain long-term accuracy
• 100% Tested — Every unit undergoes thermal cycle and sonic nozzle testing to verify performance and durability before leaving the factory
• OEM-Grade Manufacturing — Designed and produced at IATF 16949-certified facilities to meet or exceed original equipment specifications
• Limited Lifetime Warranty — Backed by Motorad's confidence warranty on all engine management products

The 3MF139 includes the complete housing assembly for a straightforward, plug-and-play installation without the need for additional adapters or hardware. It is an ideal replacement for a failed or contaminated OEM mass air flow sensor.