1998 C180 Heater Fan

[STIRLING1]

I have a 1998 c180. The heater fan is not working & i need a replacement.
The part numbers on the original part are:
X15
656914E
656910

I have been offered a new fan and the part numbers are almost identical
X15ACP
F656915U
656910

Can anyone tell me if the parts are compatible.

regards,

Stirling1