What are the specs for this Burner Orifice?

The correct replacement for Goodman model GMPN100-4 — B2589345 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 GMPN100-4 — B2589345.

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 #45 Natural Gas Burner Orifice for GMPN100-4 — B2589345

Name: OEM Goodman #45 Natural Gas Burner Orifice for GMPN100-4 — B2589345
Brand: Goodman
SKU: GOODMAN-12099
Price: 13.95 USD
Availability: InStock

SKU: GOODMAN-12099 Brand: Goodman

$13.95 $17.95

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The Goodman B2589345 Burner Orifice is a genuine OEM #45 natural-gas spud for the GMPN100-4 gas furnace and compatible Goodman/Amana models. The orifice meters the precise volume of gas delivered to each burner, so the correct drill size is essential for a clean, efficient flame and proper input BTU rating. Using the factory-specified #45 orifice keeps combustion in spec and avoids sooting, delayed ignition, or over-firing.

Specifications

OEM Part Number: B2589345
Type: Main burner orifice / spud
Drill Size: #45
Fuel: Natural gas
Thread: Standard Goodman burner manifold thread
Fits: Goodman GMPN100-4 furnace and cross-compatible models

OEM vs. Generic

The OEM Goodman orifice is machined and stamped to the exact #45 bore and manifold thread, guaranteeing correct gas flow and a leak-free seal. Generic orifices may have inconsistent bores or thread tolerances that alter firing rate and risk gas leaks. For a combustion component, always use the specified OEM orifice.

Installation Difficulty

Moderate (3 of 5) — Shut off the gas and power, remove the manifold or burner, unthread the old orifice, and install the new #45 spud. Verify the orifice size matches your gas type and altitude, and always leak-test the connection. Gas work should be performed by a licensed HVAC technician where required by code.

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 #45 Natural Gas Burn...

$13.95

Frequently Asked Questions

Does this Burner Orifice fit my Goodman GMPN100-4 — B2589345?

Yes. This is the factory-specified OEM burner orifice for the Goodman GMPN100-4 — B2589345. 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 GMPN100-4 — B2589345?

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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