What are the specs for this Bushing?

The correct replacement for Goodman model GSU100-4 — 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 GSU100-4 — B1392139.

What symptoms indicate I need a new bushing?

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

Is this bushing 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 Sight/View Port Bushing Grommet for GSU100-4 — B1392139

Name: OEM Goodman Sight/View Port Bushing Grommet for GSU100-4 — B1392139
Brand: Goodman
SKU: GOODMAN-13019
Price: 0.85 USD
Availability: InStock

SKU: GOODMAN-13019 Brand: Goodman

$0.85 $1.95

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The Goodman B1392139 View Port Bushing is the grommet/insert that seals the sight (observation) port on the furnace vestibule panel, letting a technician view the burner flame while keeping the combustion area properly closed. This small but essential part is a direct-fit replacement for the Goodman GSU100-4.

Specifications

Type: View/sight port bushing (grommet insert)
Material: Heat-resistant molded bushing
Fits: Goodman GSU100-4 furnace observation port
OEM Part Number: B1392139
Function: Seals the burner sight-glass opening

OEM vs. Generic

This is an exact-fit molded part with almost no aftermarket equivalent. The genuine Goodman OEM bushing matches the port diameter of the GSU100-4 vestibule panel, so it seats snugly and maintains the intended seal. Given the very low cost, OEM is the clear choice over an improvised substitute.

Installation

Difficulty: Very Easy (DIY-friendly). No tools required in most cases — simply press the old bushing out of the panel opening and snap the new one into place. Ensure it seats fully around its groove so the port stays sealed. A missing or cracked bushing can allow air leakage and should be replaced promptly.

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 Sight/View Port Bush...

$0.85

Frequently Asked Questions

Does this Bushing fit my Goodman GSU100-4 — B1392139?

Yes. This is the factory-specified OEM bushing for the Goodman GSU100-4 — 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 bushing on my Goodman GSU100-4 — 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 bushing?

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

Is this bushing 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 bushing?

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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