HP 850112-001 heatsink is a replacement cooling component listed for the ZBook 17 G3. The distributor identifies this part as the UMA heatsink variant, giving it a specific place among the thermal parts for this workstation.
This detail distinguishes it from the separately listed discrete-graphics heatsinks: 850109-001 for NVIDIA N16P, 850110-001 for NVIDIA N16E, and 850111-001 for AMD graphics. The 850112-001 listing is the UMA version, so the variant is defined by the workstation graphics configuration rather than by an interchangeable part number.
The listing describes the component as a heat sink/fan. It is intended for replacing the corresponding UMA cooling assembly in an HP ZBook 17 G3.