Lenovo ThinkPad T440/T450 Series CPU Heatsink (FRU 04X4159)

Replace a worn or failing cooling module in a Lenovo ThinkPad T440, T440s, T450, T450s, L440 or L450 with this genuine Lenovo CPU heatsink. Built for integrated-graphics (UMA) configurations, it transfers heat away from the processor using copper heat pipes and aluminum fins, keeping the laptop stable under everyday workloads.

Key specifications

• FRU part number: 04X4159
• Compatible with Lenovo ThinkPad T440, T440s, T450, T450s, L440, L450 (UMA models)
• Material: aluminum fins, copper heat pipes
• Fan not included
• Mounting: screw-down

Why choose it

This heatsink restores proper CPU cooling to compatible ThinkPad models, helping prevent thermal throttling and unexpected shutdowns. Its copper heat pipes and aluminum fin stack are matched to the original thermal design, so installation is straightforward for technicians and confident DIY users.

Ideal use cases

• Replacing a damaged or corroded heatsink in a ThinkPad T440/T450 series
• Refurbishing a used laptop for resale or internal redeployment
• Restoring cooling performance after fan replacement or motherboard service

Good to know

This listing is for the heatsink only; no fan or thermal paste is included. Verify your laptop uses integrated graphics (UMA) before ordering, as discrete-GPU models require a different heatsink.