What are the specs for this Orifice?

The correct replacement for Goodman model GMPN120-5 Furnace — 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 GMPN120-5 Furnace — B2589345.

What symptoms indicate I need a new orifice?

Common symptoms that indicate you need a new 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 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 Burner Orifice for GMPN120-5 Furnace — B2589345

Name: OEM Goodman #45 Burner Orifice for GMPN120-5 Furnace — B2589345
Brand: Goodman
SKU: GOODMAN-12112
Price: 18.95 USD
Availability: InStock

SKU: GOODMAN-12112 Brand: Goodman

$18.95 $24.95

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Goodman B2589345 #45 Burner Orifice

The Goodman B2589345 is a genuine OEM burner orifice (gas spud) drilled to #45 drill size for the GMPN120-5 gas furnace. The orifice is the precisely metered brass jet that meters natural gas into each burner tube. The #45 bore sets the exact BTU input per burner — even a small deviation changes the gas/air mixture and flame quality. This factory spud is drilled to Goodman's specification for correct, safe combustion.

Specifications

OEM Part Number: B2589345
Orifice Drill Size: #45
Gas Type: Natural gas
Compatibility: Goodman GMPN120-5 gas furnace
Function: Meters gas flow into the burner
Material: Machined brass spud

OEM vs. Generic

Orifice bore is a safety-critical dimension. OEM guarantees the exact #45 drilling and thread. Generic spuds may be mis-drilled or mislabeled, producing sooting, incomplete combustion, or excess CO. Always use the correct OEM orifice for your gas type and model.

Installation Difficulty

Easy–Moderate (2/5). Shut off gas, remove the burner, and thread out the old orifice with a nut driver. Hand-tighten the replacement to spec and leak-test. Order the matching quantity for a full six-burner set.

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 Burner Orifice f...

$18.95

Frequently Asked Questions

Does this Orifice fit my Goodman GMPN120-5 Furnace — B2589345?

Yes. This is the factory-specified OEM orifice for the Goodman GMPN120-5 Furnace — 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 orifice on my Goodman GMPN120-5 Furnace — 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 orifice?

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

Is this 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 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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