You can get an OEM or aftermarket 10-blade plastic/metal fan that works well, moves more air, and is better than the original fan. OE fans are about $50-60 from Ford or you can get an aftermarket one for about $25 online.
Some have even used the 11-blade fan for newer Explorers/Rangers to move even more air. Since the OHV was used for many model years, the fan and fan clutch for newer models also fits the first gens.
I would not suggest using the cheapo 9-blade fan from Dorman since it seems to develop the same cracks, but is even lower quality so the plastic presents a real risk of coming apart, unlike the OE fan that still holds together.