This is a brand new OEM Motorcraft Mass Air Flow Sensor. Not a knock off cheap fake! The OEM Mass Air Flow Sensor Motorcraft AFLS-166 part # BC3Z12B579A is a high-quality sensor designed for easy installation and direct fitment in vehicles. Specifically manufactured by Motorcraft, this mass sensor is lightweight at .15 lb and is made for the engine compartment in the front of the vehicle. It is not a universal fitment and is not considered a vintage part. With its specific OE/OEM part number BC3Z12B579A and manufacturer part number AFLS-166, this sensor is a reliable choice for maintaining air intake and fuel delivery in car and truck parts. The seller does not offer or imply any warranty. Buyer responsible for ensuring proper fitment prior to ordering. Once part has been opened/used/installed, it cannot be returned for any reason. All cancelled orders and returns are subject to restocking fees, and the buyer is responsible for all shipping costs. Some parts may require professional installation and/or programming to work with your vehicle. If you are unsure about fitment or need more information, please send us a message with your vehicle make, model year and VIN. All information provided by us is to help the buyer, but fitment for your specific vehicle is still the sole responsibility of the buyer.  Please make sure to properly diagnose your vehicle before installing this part. This is a brand new OEM Mass Air flow sensor direct replacement. Comes in original OEM packaging - NOT A FAKE -