That part is long gone. There was a thread where someone found an aftermarket substitute that seemed to work well. That or good used if you want to keep it tied to manifold temp.
I think it closes at about 180* or so.
I put a piece of oven-wire insulation over the section that near the manifold to prevent from happening again. But Vodka Tonic kinda makes one flame-proof, too.
Cheers
Easiest thing to check first: The wire coming from the fan to the thermo-switch under the rear of the intake is a ground. Check the wire first to see if it's intact and still connected to the switch. If yes (or even no) and the green connector is still there, or not, with key on engine off...