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The Goodman 0130F00010S flame sensor is a genuine OEM replacement engineered for GKS90904CXAH gas furnaces and other compatible Goodman/Amana 90% AFUE models. The flame sensor is a small but critical safety component: it uses flame rectification to confirm the burners have lit, telling the control board to keep the gas valve open. A dirty, corroded, or failed sensor is the most common cause of a furnace that lights briefly then shuts down (short cycling on flame loss).
Our OEM option is the exact Goodman-specified part with correct rod length, mounting bracket, and terminal for a guaranteed no-modification fit. The Generic equivalent meets the same electrical and dimensional specs at a lower price point and is a solid budget choice for out-of-warranty units. If your furnace is still under manufacturer warranty, choose OEM to stay compliant.
Easy (1/5). Typically a single mounting screw and one spade connector. Always shut off power and gas before servicing. Gently clean or replace, then verify flame signal microamps on startup.