I've changed mine. It's easier than it looks. You do have to remove the drivers side tire and go through the wheel well. The gasket is built into the t-stat which makes it easy. I used a 1/4" drive ratchet and socket and a couple long extensions. I also used a universal. There is a trick to it, I had to put tape on the universal to make it stiff because you have to go in at an angle to access the top bolt. The stock one didn't have any rtv on it so I didn't use any, just took the old one off and put the new one on.