Generac 0J39430126 Intake & Exhaust Valve Set For 389CC/420CC Engines. Commonly used on portable generators.
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