The only way your going to find a direct replacement is to purchase the motor from an authorized (insert make here) dealer.
I call these "commissioned" motors. The maker of the unit, commissions/contracts a motor maker (in this case GE) to mfgr. a bunch of motors with just enough spec difference to make finding a replacement a real bitch. Typically, these motors will have a model # that does not reference back to the company who made it.
What you can do is, go to Grainger's website and use their "Motor Match" program to find a close replacement.
Typically, you need to know things like:
RPM, HP, Shaft length, shaft diameter, amps, volts, frame size, thermal protection, open air over, service factor, etc.....
Just to warm you up, your probably looking at around $250 for a new motor.
P.S.- you will want to purchase a new capacitor for the motor if it does not come w/one.