Used Apple Mac Pro 5.1 2010 2.8GHz Quad Core CPU Tray
Complete with 2.8GHz Quad Core Xeon Nehalem processor & heat sink as shown.
Fits: A1289
Apple Mac Pro Mid 2010
Apple Mac Pro Mid 2012
Fully tested working part
Part numbers: 661-5707, 820-2482 (Processor board), 661-5709 (Processor), 076-1338 (heat sink), 076-1344 (processor tray)