HP - 691641-001 - Cooling Fan Envy 4-1000 691641-001 - HP - Cooling Fan with Foil for Envy 4-1000 $72.42 $61.37
HP - 416457-001 - CPU Cooling Fan NC6400 416457-001 - HP - Compaq CPU Cooling Fan for NC6400 $247.97 $210.14