We recently had to replace a blower wheel on a Trane package hvac. The hub had come loose from the perimeter. The part was not quickly available from Trane so we had to do some digging to come up with a locally available match.
The original part number as listed in the manual is WHL02558 . ( The tag on the housing lists it as D303766P46 )

The new superseding Trane part number is WHL02167 or WHL-2167 .

Diameter 10.62 width 10.68 CCW 1/2” bore concave disc

We found a wheel with matching specifications at Johnstone Supply . That part number is W89-170 or W89170 ( Also known by part number 01331606 ). This was a perfect fit so we were able to get the customer’s ac up and running the same day.