MacBook Pro 15" Retina (Late 2016-2019) Left Fan

An aging left fan may become noisy and inefficient or simply fail and stop spinning, leaving your laptop to overheat and eventually damaging your processors. Replace a defective left fan to fix overheating problems or to keep your 2016 to 2019 model 15" MacBook Pro with Retina Display running quietly. If your screen is facing you, this is the fan on the left side of the machine.