Lenovo 01YT252 is a laptop CPU cooling assembly that combines a heatsink with a fan. It is designed to carry heat away from the processor and move air through the cooling assembly, making it a service part for restoring the laptop’s CPU cooling function.
The listing identifies this part for ThinkPad X1 Carbon 4th Gen models 20FB and 20FC, as well as ThinkPad X1 Yoga (1st Gen) models 20FQ and 20FR. Its stated purpose is processor heat dissipation; the source does not provide further dimensions or electrical specifications.