12-28-2016 08:05 AM
Hi! @Zephead, Thanks for stopping by HP forums!
I understand that you need fan part number for your laptop.
Please find the part number for fan mentioned below.
You can purchase the part from HP parts store, Use this link to purchase the part.
Refer page 24 in maintenance and service guide for more information.
Let me know if this helps!
Have a wonderful day ahead! :)
I am an HP Employee