I have an old Ford F250(sorry guys) with a 5 cyl. Deutz in it that has a Stanadyne fuel heater in front of the filter. I couldn't find a part number on it, and it's pretty old so I'm not sure if they make it anymore.
I know that Racor makes one that is currently available -- just do a google search on "fuel heater" and "racor" -- you'll find it.
Good luck!