IMAGE COMING SOON
OEM Guaranteed
Same-Day Ship
30-Day Returns
Secure Checkout
The Goodman B1392139 is an OEM view port bushing (sight-glass grommet) for furnaces such as the AMSS920603BNAA. It frames and seals the burner-observation port, letting a technician safely view the flame or igniter while keeping the combustion area properly closed. A cracked or missing bushing can leave a gap at the viewing port and lead to a loose or rattling sight window.
The genuine Goodman bushing is molded to the exact port diameter and rated for the temperatures near the burner compartment. Generic grommets may not tolerate the heat or seat correctly, working loose over time. OEM ensures a proper, durable fit at the observation port.
Very Easy (1 of 5) — Remove the old bushing and press the replacement into the port cutout by hand. No tools required; installs in under a minute.