Gawd I hate looking up parts for a Honda Civic.
You need to ask for everything but the owner's mother's maiden name and blood type. DX,EX,GX,LX and then the engine designation (1.7L doesn't usually cut it) The VIN would probably answer most of the questions that you'll be asked.
Anyway ...
I'm sure you know there is likely a fan relay that needs to be checked as well.
NAPA Echlin #AR-614
*should be* the one, I think.