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The Goodman B1497204 Fusible Link is a genuine OEM 144°C (291°F) one-time thermal fuse designed for the GUP050-2A gas furnace and related Goodman/Amana models. Wired inline in the control circuit, this safety link opens permanently if furnace temperatures exceed its rating — protecting against burner rollout, restricted airflow, and heat exchanger overheating. When a furnace goes dead after an overheat event, a blown fusible link is a frequent culprit and an inexpensive fix.
The OEM Goodman B1497204 is calibrated to the exact 144°C trip point specified for this furnace's safety design. Generic thermal links with mismatched temperature ratings can nuisance-trip or, worse, fail to open when they should. Because this part is a life-safety device, always match the OEM temperature rating — never substitute a different value.
Easy (1/5) — A quick 5–10 minute repair. Kill power to the furnace, unplug the failed link from its harness connectors, snap in the new B1497204, and reset the system. Important: a blown link means the furnace overheated — diagnose and clear the root cause (dirty filter, blocked flue, failed blower) before returning the unit to service.