It's a Pierce built on a 1976 C-900/F-900 chassis. Ford doesn't have it and neither does anywhere else I have checked.
JCW does not have it, because it's a commercial chassis, not a pickup or van.
moe
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pick up a copy of Hemminigs motor news. Its a large brown magizine. also heres there url http://www.hemmings.com/
also pierce has a parts support system they may be able to help
http://www.piercemfg.com/Home.html
gearnofear
Just a shot in the dark but they have been known to carry stuff this large. DVAP.com they specialize in older classic cars like this and may very likely have it. the other option is to contact a radiator shop and see if they can special order it. This may also be something you may need to go to a simi Repair center to have ordered or built for you. Not sure where you haved checked, but these are some ideas.
james a
would find you one with more info is it just the fan you need what motor is it ford gas /cu inch .....diesel Cummings.. Cat.. 6 Cylinder or v 8.... with enough info even the intelligent people that answered before me will be able to locate one for you
Anonymous
Go to a good NAPA parts store w/numbers in hand.
postal p
You could try the Whitney's catalog. They have a ton of stuff for every vehicle ever made.