Yukrotor Mass Air Flow Sensor MAF for Ford F-150/F-250 — 3L3A12B579BA Direct-Fit, 12-Month Warranty

Yukrotor's Mass Air Flow (MAF) Sensor 3L3A12B579BA measures incoming air to help the engine control unit set the correct air–fuel ratio for reliable combustion and drivability.

This replacement MAF sensor is built to match the electrical and mechanical specs of many Ford, Lincoln and Mercury vehicles from the mid-2000s to early 2010s. Designed as a direct-fit aftermarket alternative to common OE numbers (including 3L3Z12B579BA), it aims to restore accurate air-flow feedback to the ECU after an original sensor fails or ages out. The unit is tested for fit, form and function and ships with a 12-month warranty for added confidence.

How will installing this MAF sensor affect engine performance?

Replacing a faulty MAF sensor can restore accurate airflow readings to the engine control unit, which helps the ECU calculate fuel injection more precisely. That often improves idle stability, throttle response and overall fuel metering versus a degraded sensor. Results depend on the vehicle’s condition and other sensors.

• Provides real-time air-flow data to the ECU for correct fuel calculation.
• Can reduce rough idle and hesitation caused by inaccurate readings.
• Direct-fit shape and connector match original installation points.
• Works with multiple OE replacement part numbers listed by the manufacturer.

Which vehicles and part numbers is this MAF sensor compatible with?

This Yukrotor unit covers a long list of Ford, Lincoln and Mercury models from roughly 2003–2015, including F-150, F-250 Super Duty, Explorer, Escape, Mustang, E-series vans, and many Lincoln/Mercury variants. It replaces several common OE references, so verifying the old part number before purchase is recommended. Use your vehicle year, make and engine to confirm fit before ordering.

• Compatible with Ford: F-150, F-250, F-350, E-150/E-250/E-350, Escape, Explorer, Mustang, Ranger, Fiesta, Fusion and more.
• Compatible with Lincoln: Navigator, MKX, MKZ, Town Car, MKS, MKT and others.
• Compatible with Mercury: Grand Marquis, Mariner, Milan, Mountaineer, Sable and others.
• Replaces OE numbers such as 3L3A12B579BA, 3L3Z12B579BA and several alternate codes—check your original part.

What should I check before buying and installing this sensor?

Confirm fitment by comparing your vehicle’s year, engine code and the part number on the old sensor to the compatibility list. Inspect the connector pins and mounting points so the replacement lines up correctly. If the check engine light is present, clearing codes after installation or scanning for related faults may be necessary.

• Verify the existing part number on the old sensor matches listed replacements.
• Ensure the electrical connector and mounting holes match your intake duct.
• Perform a throttle/idle check and clear codes or scan after installation.
• Follow basic safety: disconnect the battery before swapping sensors if recommended.

Who is this for: This Yukrotor MAF sensor is aimed at DIY mechanics, independent repair shops and fleet owners who need a cost-effective direct-fit replacement for mid-2000s to early-2010s Ford, Lincoln and Mercury vehicles. It’s suitable when the original sensor shows symptoms of failure—erratic idle, poor throttle response or diagnostic trouble codes—and you want a replacement that follows OE specifications and comes with a 12-month warranty.