Perfect replacement. In my case, better than factory. The one that came on the play was broken when I received it, but the crack was impossible to see. After several, intermittent instances of the extruder mysteriously crashing into the bed I realized that the probe was being hit by debris on bed (ooze remnants, curled print, etc...) and moving upward (losing calibration).
PrintrBot Play; PLA; 3mm layer height