Description:

Retrofit harness for the Generac MK3/MKIII Exerciser Timer. Does not include the exerciser itself, just the harness.

The actual timer, part number 0A8637, can be found here:

Generac 0A8637 MK3/MKIII Programmable Exerciser For GTS Transfer Switch

Generac replacement parts will also usually fit the following Generac branded generators: Honeywell, Guardian, Siemens, Carrier, Watchdog, Centurion, & Bryant.

If you need Generac generator troubleshooting support, please visit our interactive forum