The fan clutch has to be for the correct rotation.


There are tons of reverse rotation fans out there. Basically any RWD vehicle with a serpentine belt has a fan that rotates counterclockwise.

My 1993 Chevy Suburban is an example. Thermal clutch, reverse rotation water pump and fan.

IMHO there is a ton of interchange between fans, a lot more than you may imagine. So look for the fan/clutch assembly in the Internet Lending Library (Rockauto) and get one that fits. If the pilot stub from front of water pump is 0.625, then that pump to clutch circle diameter isn't important if the clutch hub flange has slotted holes.
Then you use the fan matching the thermal clutch.

R.

I'm a little surprised at this question because serpentine belt systems usually include either a correct water pump or a list of what works.