The product is a downstream oxygen O2 sensor OEM for Ford Fusion, Edge, Lincoln MKZ, and MKC vehicles. It is a direct replacement sensor with a male connector type and comes in a package containing 1 sensor. The sensor type is an oxygen sensor, and it is designed for rear, downstream placement on the vehicle. The interchange part numbers include FB5Z9G444A, FB5Z9G444C, GK4Z9G444D, GK4Z9G444E, and HS7Z9G444A, while the OE/OEM part number is HS7Z9G444B. This sensor is an essential component for maintaining the proper fuel delivery and air intake in the vehicle.