transmissions on 2009 Mercury Mountaineer

I brought my Mountainare to the dealer a week ago cause of transmission problems,, have not seen my truck in over a week. The manager says they are waiting on a tourqe something and have installed a new tranmission pump seal and gasket.. why is finding a part so difficult for this transmission>?

Asked by for the 2009 Mercury Mountaineer
Sounds like they had to order a tork converter for your vehicle