Hi @fegelein3290 ,[br]
If you are looking to replace the fan, then the part number for the fan is 732273-001. The part number is referenced from the HP service guide for your laptop.[br]
https://support.hp.com/ca-en/product/hp-split-13-m000-x2-pc/5391003/model/5399987/manuals [br]
See page 48 to see to see fan removal steps.
I would not suggest trying to replace the motor on the fan.
A better upgrade would be to install an SSD if you have not done so. Please reference pg 35 of the service guide.
Pg 53 also references a slot for an mSATA drive that you can install as well.
-Steve