Transmission Fluid Pump
WARNING: This page is about a different car, the 2013 Ford F-550 Super Duty, 2013 Ford F-450 Super Duty, 2013 Ford F-350 Super Duty, and 2013 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
This transmission has a gear-type pump that supplies fluid under pressure to the hydraulic system.
The torque converter impeller hub rotates the drive gear of the pump.