This is a genuine heatsink for the Lenovo IdeaPad 510S-13ISK and 510S-13IKB laptops with part number 5H40L44997. This component is specifically designed to replace the original heatsink that has been damaged or stopped functioning and restore full and efficient cooling of the discrete DIS graphics card. The heatsink is manufactured to meet original OEM standards and fits precisely the 510S-13ISK type 80SJ and 510S-13IKB type 80V0 models without any modifications or adjustments required. The component ensures optimal heat dissipation and prevents overheating that could cause performance drops or permanent damage to internal components. Made from durable high-quality materials it guarantees maximum cooling efficiency and a long service life. Installation is recommended for professional technicians due to the high sensitivity of cooling system components.