The high quality LG Condenser Fan Blade (5900AR1508B ) fits on the motor shaft and circulates air over the condenser to cool the refrigerant before the refrigerant enters the evaporator. The Condenser Fan Blade is for room air conditioners and replaces 5900AR1508A. Please be aware that it is recommended to use saftey equipment and to disconnect the appliance from all utilities prior to any service or repair. Please refer to your owners manual to confirm part numbers and for instructions as some repairs require a trained service professional to complete.