Hustler Sport Transmission cooling fan.

I need some help locating a cooling fan that broke off of my mower. My drive belt came off and broke the small plastic cooling fan off the right transmission drive pulley. A search of the hustler OEM parts only pictures the fan on top of a new transmission. The fan has a part# 53466, which doesn't show up anywhere. The fan is manufactored by Advanced Air International. Does anyone know of anywhere online I can purchase one of these?

Thanks