What are the specs for this Burner Orifice?

The correct replacement for Goodman model GMN120-5 — B2589343 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 GMN120-5 — B2589343.

What symptoms indicate I need a new burner orifice?

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

Is this burner orifice 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 Natural Gas Burner Orifice for GMN120-5 — B2589343

Name: OEM Goodman Natural Gas Burner Orifice for GMN120-5 — B2589343
Brand: Goodman
SKU: GOODMAN-11594
Price: 22.95 USD
Availability: InStock

SKU: GOODMAN-11594 Brand: Goodman

$22.95 $29.95

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Texas CMBL #19328542014

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The Goodman B2589343 Natural Gas Orifice is a genuine OEM replacement for GMN120-5 series gas furnaces. This precision-drilled brass burner spud meters the exact flow of natural gas into the burner venturi, setting the furnace's rated BTU input. A worn, corroded, or incorrectly sized orifice causes sooting, lazy flames, delayed ignition, or under-firing.

Specifications

OEM Part Number: B2589343
Type: Burner Orifice / Spud
Fuel: Natural Gas
Material: Machined Brass
Compatible Model: Goodman GMN120-5
Equipment: Gas Furnace

OEM vs. Generic

The genuine Goodman OEM orifice is drilled to the precise diameter specified for your furnace's input rating and altitude, guaranteeing a clean, correctly proportioned flame. Generic orifices with approximate bore sizes risk over- or under-firing, incomplete combustion, and dangerous CO production. With a gas-metering component, exact OEM sizing is a safety matter — not a preference.

Installation Difficulty

Moderate (3/5). Requires shutting off the gas supply and using a wrench to back the orifice out of the manifold. Thread the new spud carefully to avoid cross-threading brass, then leak-test every joint with soap solution before relighting. If you are not confident working with gas connections, hire a licensed HVAC technician. Allow 20–30 minutes.

Backed by our fit guarantee. Questions? Contact info@nationalhvacparts.com.

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 Natural Gas Burner O...

$22.95

Frequently Asked Questions

Does this Burner Orifice fit my Goodman GMN120-5 — B2589343?

Yes. This is the factory-specified OEM burner orifice for the Goodman GMN120-5 — B2589343. 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 burner orifice on my Goodman GMN120-5 — B2589343?

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 burner orifice?

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

Is this burner orifice 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 burner orifice?

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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