If you've cracked the glass or are experiencing LCD defects on your Retina 5K iMac, you need to replace the whole display. The LCD panel is fused together with the glass to form a single display unit. Installation requires cutting through the adhesive and installing fresh adhesive strips. Fortunately for you, we have both the cutting tool and the adhesive strip kit you need! This panel is not compatible with the Late 2015 iMac, which uses part numbers LM270QQ1(SD)(B1) and LM270QQ1(SD)(B2).
661-00200 A1419 5K LCD LED Display iMac 27 LM270QQ1 (SD) (A1) (A2) 2014 2015 NB-56950W" This is a replacement LCD and Glass assembly for the late 2014 through Mid 2015 iMac 27".
Apple part number: 661-00200
Compatible models: iMac 2014 2015 A1419 imac 27 inch