OEM JZ 91mm PCD Clutch Fan Coupling Hub.
These seem to end up packing it in after being around 20 years old and can not cool your engine efficiently.
Note: This product comes in an AISIN box who supplies this product to Toyota and is cheaper without their markup.
This won't suit a 1JZGTE VVTI or 2JZGE VVTI as they have a different PCD on the waterpump.
Nuts to install this can be found HERE