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The Goodman B1392139 is a genuine OEM view port bushing built as a direct-fit replacement for the Goodman/Amana AMVC960403BNAA gas furnace. This bushing frames the burner observation (sight) port, allowing technicians to safely inspect the flame while sealing the opening against air leakage and heat escape.
Genuine Goodman B1392139 is molded from a heat-rated compound sized to the exact port dimension. Generic substitutes may use lower-temperature plastics that warp or shrink near the burner box, breaking the seal. OEM ensures a snug, heat-stable fit and preserves proper combustion-air integrity.
Rating: Easy (1/5). Press-fit into the port opening — no tools required. A quick fix for a cracked or missing bushing.
Keep your furnace sealed and inspectable with the genuine Goodman B1392139.