A-Premium Mass Air Flow Sensor Assembly 4-Pin — Direct-Fit MAF with ±2% Accuracy

A-Premium Mass Air Flow Sensor Assembly (4-pin) is a direct-fit replacement that measures intake air so your engine control unit can accurately set fuel delivery.

This 4-pin MAF sensor from A-Premium is engineered to replace part number F6ZZ12B579AARM and compatible OEM references, restoring correct airflow readings for a range of Ford, Lincoln and Mercury models from the late 1990s to early 2000s. Built with a PBT+GF30 plastic housing and an aluminum alloy flow element, the unit mounts with four bolts and delivers a measuring range up to 625 kg/h with ±2% accuracy. It’s designed to eliminate intermittent failures that can cause rough idle, poor throttle response or reduced fuel efficiency.

Will this MAF sensor fit my vehicle?

Check vehicle compatibility by year, engine and VIN engine code to confirm fitment. This assembly fits many Ford F-150, E-150/E-250 Econoline, Crown Victoria, Taurus, Windstar, Contour models and equivalent Lincoln and Mercury vehicles listed below.

• Ford F-150 1997–2003 V6 4.2L and F-150 Heritage 2004 V6 4.2L
• Ford E-150/E-250 Econoline 1997–1998 V6 4.2L
• Crown Victoria/Grand Marquis/Lincoln Town Car 1996–1999 with VIN W 4.6L V8
• Contour, Cougar, Mystique, Sable, Taurus, Windstar specific 1996–2002 models per listed dates

How accurate and reliable are the measurements?

The sensor provides a measuring range from 0 to 625 kg/h and is specified to ±2% measurement accuracy, suitable for maintaining precise air–fuel calculations used by the ECU. It’s built with corrosion-resistant materials and a secure bolt-on mounting to reduce vibration-related errors and extend service life.

• Measuring range: 0–625 kg/h for broad operating coverage
• Accuracy: ±2% to support correct fuel trims
• Material: PBT+GF30 housing and aluminum alloy flow element
• Electrical limit: maximum supply voltage 17 V for compatibility

What are the installation and connector details?

This is a bolt-on replacement with four mounting holes and a 4-pin pin-style terminal that matches the stock harness for the covered vehicles. Installation is straightforward for anyone familiar with basic engine bay work, and it uses the same electrical interfaces as the original part numbers listed in the references.

• Terminal quantity: 4 pins (pin-style)
• Mounting: 4 bolt holes for direct replacement
• Compatible references: MAS0128, AFH7011, F6ZF12B579AA and more
• Housing included: yes — ready to install

What should I expect in performance and warranty?

Replacing a failing MAF sensor with this assembly typically restores stable idle, improved throttle response and more consistent fuel economy by returning accurate intake air readings to the ECU. A-Premium backs the part with a one-year unlimited-mileage guarantee for reassurance after purchase.

• Restores accurate air measurement for proper fueling
• Helps reduce drivability symptoms tied to MAF faults
• One-year unlimited-mileage warranty included
• Manufactured to match OEM electrical and mechanical form factors

Who is this for: The A-Premium 4-pin Mass Air Flow Sensor Assembly is aimed at DIY mechanics, independent repair shops and owners of compatible Ford, Lincoln and Mercury vehicles from the late 1990s to early 2000s who need an affordable, direct-fit replacement for a faulty MAF. If your vehicle shows rough idle, decreased fuel economy or trouble codes linked to airflow measurement, this part restores accurate airflow data to the ECU and simplifies diagnosis and repair without custom wiring or modification.