Generac 0D8564ASRV Airbox Assembly 990/992CC. Used on older mechanical governor units like the 12kW model 4456 and the 15kW model 4390. Most commonly replaced due to a failed throttle linkage arm.
It's advised to replace the rubber seals and intake gaskets at the same time since they commonly tear during disassembly.
Rubber seals can be seen here: Generac 0C3041/0C3041A Intake Manifold Rubber Seal
Intake gaskets here: Generac 0C3043 Intake Manifold Gasket For 990/992/999CC Engines
The rubber mounting washers can be seen here: Generac 0D4417 Airbox Mounting Rubber Washer 1/4" X 1/8"
Generac replacement parts will also usually fit the following Generac branded generators: Honeywell, Guardian, Siemens, Carrier, Watchdog, Centurion, Eaton & Bryant.
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