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The Goodman B1497204 is a genuine OEM thermal fusible link engineered for the Goodman GUI100-4 gas furnace and compatible models. This one-time safety device opens the control circuit if the furnace exceeds its rated temperature, protecting the heat exchanger and blower assembly from overheating damage. If your furnace shuts down on a limit fault or fails to fire, a blown fusible link is one of the most common and inexpensive culprits.
This is a genuine Goodman OEM link rated to the exact 144°C trip point specified for your equipment. Generic links are often mislabeled or rated to a different temperature, which can cause nuisance trips or, worse, fail to protect the system. For a safety-critical component we recommend the OEM part.
Easy (2/5). A basic hand-tool repair for a competent DIYer — disconnect power, unplug the wire leads, swap the link, and reconnect. Always shut off gas and electrical power first. If the link blows again after replacement, investigate airflow (dirty filter, blocked coil, failing blower) before replacing a second time.