HP 407862-001 - Thermal heat sink module - With thermal paste compound and alcohol pad - Does NOT include cooling fan Retail
HP 438875-001 - Heat sink (thermal module) - Includes thermal grease, alcohol pad, and thermal pad - For use with discrete system boards (Merom) Retail
HP 418887-001 - Heat sink (thermal module) - Includes thermal grease, alcohol pad, and thermal pad - For use with discrete system boards Part 41888 Retail