MacBook Pro 15" Retina (Late 2013) Logic Boards had either dual graphics processors or a single integrated graphics processor. The heat sinks for these two models are not interchangeable. Not sure what logic board your laptop has? Use ID your Mac to identify your laptop. Find the heat sink for the Dual Graphics models here.
- MacBook Pro 15" Retina (Late 2013/Mid 2014, Integrated Graphics)