Generac 0D4123B/10000047784 Oil Pump Assembly 990/992/999CC Engines. Does not come with the O-Ring. Part number 0D4123B has now been replaced by 10000047784.
Generac replacement parts will also usually fit the following Generac branded generators: Honeywell, Guardian, Siemens, Carrier, Watchdog, Centurion, Eaton & Bryant.
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