What are the specs for this Fitting?

The correct replacement for Goodman model DMP125-52AB — 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 DMP125-52AB — 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 Sight/View Port Bushing for DMP125-52AB — B1392139

Name: OEM Goodman Sight/View Port Bushing for DMP125-52AB — B1392139
Brand: Goodman
SKU: GOODMAN-9537
Price: 2.95 USD
Availability: InStock

SKU: GOODMAN-9537 Brand: Goodman

$2.95 $3.95

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Goodman B1392139 View Port Bushing

The B1392139 is a genuine OEM Goodman view port bushing designed for the sight/inspection opening on the DMP125-52AB gas furnace and related Goodman/Amana models. This small bushing seats in the burner-compartment or heat-exchanger inspection port, providing a clean, sealed pass-through so technicians can safely observe the flame during operation. A missing or cracked bushing can allow air leaks that disturb combustion or let light and heat escape the viewing port.

Specifications

Type: View / sight port bushing (grommet)
Material: High-temperature molded polymer
Function: Seals and frames the combustion inspection port
Fits: Goodman DMP125-52AB and compatible DMP-series furnaces
Sold individually

OEM vs. Generic

Because this part locates in a hot combustion-adjacent area, the OEM bushing uses a heat-rated compound and the exact diameter of the factory port. Generic grommets may not withstand the temperature or may fit loosely and fall out. At this price point, the genuine part is the obvious choice.

Install Difficulty

Easy (1/5). The bushing presses into the port by hand in under five minutes — no tools required. Remove the old bushing, clean the opening, and snap the replacement into place. Ensure the furnace is powered down and cool before servicing.

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...

$2.95

Frequently Asked Questions

Does this Fitting fit my Goodman DMP125-52AB — B1392139?

Yes. This is the factory-specified OEM fitting for the Goodman DMP125-52AB — 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 DMP125-52AB — 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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