Generac 0F5048 Liquid Cooled 5/16" Hex Door Latch. This is the older style door latch that uses a 5/16" Allen key to open. They can also be replaced with the more modern style 0F5048D, which is the slotted circle style.
This does not include the plastic door pull which is a common failure point as well. They have been upgraded to a new style metal pull, which can also be ordered here: Generac 0F5049B Metal Liquid Cooled Door Latch Pull
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