What are the specs for this Fitting?

The correct replacement for Goodman model AMS80904BNAA Furnace — B1392139 is this exact part. It is the factory-specified replacement with exact OEM specifications. Using a part with different specifications can cause equipment damage or void your warranty. You can verify this by checking the data plate on your Goodman equipment which lists the model number AMS80904BNAA Furnace — B1392139.

What symptoms indicate I need a new fitting?

Common symptoms that indicate you need a new fitting include unusual noises, intermittent operation, complete failure to operate, or visible damage. For specific diagnostic guidance, visit nationalhvacparts.com/pages/hvac-diagnostic.

Is this fitting compatible with Bryant or Payne systems too?

Many Goodman parts are cross-compatible with Bryant and Payne systems since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across multiple brand labels with different model numbers. To verify cross-compatibility, check your Bryant or Payne equipment service manual for cross-compatible part numbers, or contact info@nationalhvacparts.com with your model number for confirmation.

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Goodman

OEM Goodman View Port Bushing for AMS80904BNAA Furnace — B1392139

Name: OEM Goodman View Port Bushing for AMS80904BNAA Furnace — B1392139
Brand: Goodman
SKU: GOODMAN-7074
Price: 0.85 USD
Availability: InStock

SKU: GOODMAN-7074 Brand: Goodman

$0.85 $1.29

OEM Guaranteed

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30-Day Returns

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Texas CMBL #19328542014

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Govt POs Accepted

The Goodman B1392139 View Port Bushing is the genuine OEM sight-glass grommet for the AMS80904BNAA gas furnace and compatible Goodman/Amana models. This small but important fitting seals the burner inspection window on the combustion cover, letting technicians visually verify flame quality while maintaining the cabinet's sealed-combustion integrity. A cracked, brittle, or missing bushing can allow air leaks that disturb the burner flame and defeat proper draft.

Specifications

Type: View port / sight-glass bushing (grommet)
Function: Seals burner inspection window
Fits: AMS80904BNAA and compatible Goodman/Amana furnaces
Material: High-temperature resistant grommet
Installation: Snap-in / press-fit

OEM vs. Generic

The OEM Goodman B1392139 is molded to the exact port diameter and rated for the temperatures at the burner box. Generic grommets may not seal fully or can degrade quickly under heat, leading to combustion-air leaks. At this price, there's no reason not to use the genuine part.

Installation

Difficulty: Very Easy. Press the old bushing out and snap the new one into the port opening — under 5 minutes, no tools required. Shut off power and gas and allow the furnace to cool before opening the burner compartment. Confirm the bushing seats fully around its entire lip for a proper seal.

Shipping Information

Orders placed before 3PM CST ship same business day
Standard delivery: 2-5 business days
Express shipping available at checkout
Free shipping on orders over $75
Tracking number emailed upon shipment

Return Policy

30-day returns on unused parts in original packaging
Electrical parts (capacitors, contactors, control boards) are final sale once installed
Email info@nationalhvacparts.com to initiate a return
Refunds processed within 5-7 business days

OEM Goodman View Port Bushing fo...

$0.85

Frequently Asked Questions

Does this Fitting fit my Goodman AMS80904BNAA Furnace — B1392139?

Yes. This is the factory-specified OEM fitting for the Goodman AMS80904BNAA Furnace — B1392139. It is a direct drop-in replacement that fits without modification. Always verify the model number on your equipment nameplate before ordering.

How do I replace the fitting on my Goodman AMS80904BNAA Furnace — B1392139?

Refer to your equipment service manual for model-specific steps. General approach: turn off power, photograph connections, remove old part, install new part, restore power and test. For gas components, hire a licensed technician. Email info@nationalhvacparts.com for guidance.

What symptoms mean I need a new fitting?

Common symptoms: unusual noises, intermittent operation, complete failure, or visible damage. Visit our diagnostic hub for symptom-based troubleshooting.

Is this fitting compatible with Bryant or Payne too?

Many Goodman parts are cross-compatible with Bryant and Payne since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across brand labels with different model numbers. To verify: check your Bryant or Payne equipment service manual for cross-compatible part numbers, or email info@nationalhvacparts.com with your model number.

Should I use OEM or aftermarket for my Goodman fitting?

OEM recommended for reliability and warranty compatibility. OEM parts match exact factory specifications for proper fit, performance, and safety. While aftermarket alternatives cost less upfront, the risk of improper fit and reduced lifespan usually makes OEM the better value long-term.

How fast does National HVAC Parts ship?

Orders placed before 3:00 PM CST ship the same business day. Standard delivery is 2–5 business days anywhere in the continental United States. Express shipping available at checkout. We ship from Houston, TX to all 50 states. 30-day return policy on all parts.

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