Generac G063617 Transfer Relay (Ice Cube Relay) For Transfer Switch (Old Style). Found in a majority of Generac transfer switches. Still used in Commercial style switches and other equipment. Was replaced in the Home Standby Switches with 0K0103 around 2013. If your relay looks like the one pictured, it should be replaced with this part number.
Generac replacement parts will also usually fit the following Generac branded generators: Honeywell, Guardian, Siemens, Carrier, Watchdog, Centurion, Eaton & Bryant.
If you need Generac generator troubleshooting support, please visit our interactive forum