The ford part number for the actuator is 1L5Z-9L492-AC.
Dorman previously made repacement parts for the Duratec intake manifold with the IMRC. The Dorman part number for the complete manifold assembly is 615-462, but it is currently not listed on their website. Dorman also had IMRC actuators for that are used on other vehicles with the 4 Cyl Duratec engines. They are a little different, but serve the same purpose. It's possible you may be able to interchange them or rebuild your old one if the moving parts are the same.
There are several threads about rebuilding the IMRC and components on the Focus, Fusion, Escape and other forums specific to the models that used Duratec engines. I don't know if that would apply to your situation, but it may be worth a look.
The Mazda part number for the intake is 1F20-13-130C. Searching for that part number shows some sources where it may be available.
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