Generac 0C4138 Exhaust Manifold gaskets fit many different models of Generac Air Cooled engines. These are used across the entire Automatic Standby and Portable Generac line of generators. If replacing the engine head, removing the exhaust for a starter replacement or for any other reason, these should be replaced.
Generac replacement parts will also usually fit the following Generac branded generators: Honeywell, Guardian, Siemens, Carrier, Watchdog, Centurion, & Bryant.
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