Water Cooling Radiator & Heatsink Fan Kit for Z420 — 647289-001 / 647289-002 / 647289-003 Front Chassis Cooler

Front-chassis cooling assembly designed for the Z420. This kit combines a water-cooling radiator, heatsink and cooler fan to restore thermal management in the front of the chassis. Matches HP part numbers 647289-001, 647289-002 and 647289-003. Ideal as a direct replacement for the Z420 radiator fan and heatsink setup — verify the part number in your system before purchasing.