Depends on what you mean by "prop adapter".

There are prop adapters that slide onto the motor shaft, and are either the collet type, or have a set screw to clamp onto the shaft. With that type of prop adapter, you just need to be sure the the adapter is made for your motor's shaft size.

If you're talking about a prop adapter that bolts onto the can of an outrunner, then you probably need the part made specifically for your motor.