What are the specs for this Fitting?

The correct replacement for Goodman model AMH80904BNAB — 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 AMH80904BNAB — 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 Sight Glass Bushing for AMH80904BNAB — B1392139

Name: OEM Goodman View Port Sight Glass Bushing for AMH80904BNAB — B1392139
Brand: Goodman
SKU: GOODMAN-5788
Price: 6.95 USD
Availability: InStock

SKU: GOODMAN-5788 Brand: Goodman

$6.95 $8.95

OEM Guaranteed

Same-Day Ship

30-Day Returns

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Texas CMBL #19328542014

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Govt POs Accepted

The Goodman B1392139 View Port Bushing is a genuine OEM component for the AMH80904BNAB gas furnace and compatible Goodman/Amana models. This small but essential bushing seats in the burner-compartment access opening, forming the sight-glass port that lets a technician safely observe the burner flame and ignition sequence without opening the sealed combustion area. It also helps maintain proper compartment sealing and appearance.

Specifications

Component type: View port bushing / sight-glass grommet
Location: Burner compartment access panel
Material: Heat-tolerant molded bushing
OEM Part Number: B1392139
Fits: AMH80904BNAB and related Goodman/Amana furnaces
Brand: Goodman (Daikin family)

OEM vs. Generic

The genuine OEM B1392139 is molded to the exact diameter and depth of the furnace's access opening, so it snaps in securely and seals correctly. Generic bushings often fit loosely or degrade near combustion heat. Given how inexpensive the OEM part is, there's little reason to gamble on an off-brand substitute.

Install Difficulty

Very Easy (1/5). No tools required in most cases — press the old bushing out and snap the new one into the access opening. A 2-minute job. Always confirm power is off before working near the burner assembly.

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 Sight Glas...

$6.95

Frequently Asked Questions

Does this Fitting fit my Goodman AMH80904BNAB — B1392139?

Yes. This is the factory-specified OEM fitting for the Goodman AMH80904BNAB — 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 AMH80904BNAB — 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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