This is a replacement heat sink for the Retina MacBook Pro..
This heatsink sits on top of your CPU and logic board, and retains the heat generated from them.
This one is compatible with only the discrete graphics configurations.
All parts tested and working just like they were when you bought your MacBook..
Part Numbers: 076-1397.
<li class="maclist-li"><h4>Compatible with : </h4>
<ul>
Pro Retina 15 (A1398,Mid 2012 / Early 2013).