Generac 0C5136A Airbox/Air Filter Cover Thumb Screw 57MM For 990/992CC Engines.
NOTE: This DOES NOT fit the 20kW units with the taller air filter element, only units that use the 0C8127 style air filters use this cover.
Generac replacement parts will also usually fit the following Generac branded generators: Honeywell, Guardian, Siemens, Carrier, Watchdog, Centurion, Eaton & Bryant.
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