What are the specs for this Burner Orifice?

The correct replacement for Goodman model GMTH115-5 Natural Gas Furnace — B4089343 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 GMTH115-5 Natural Gas Furnace — B4089343.

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 #43 Burner Orifice for GMTH115-5 Natural Gas Furnace — B4089343

Name: OEM Goodman #43 Burner Orifice for GMTH115-5 Natural Gas Furnace — B4089343
Brand: Goodman
SKU: GOODMAN-12598
Price: 9.95 USD
Availability: InStock

SKU: GOODMAN-12598 Brand: Goodman

$9.95 $12.95

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Goodman B4089343 #43 Burner Orifice

The Goodman B4089343 is a genuine OEM burner orifice (gas spud) drilled to #43 size for the GMTH115-5 natural gas furnace and compatible Goodman/Amana burner assemblies. The orifice meters the exact gas flow into each in-shot burner, setting the input rate (BTU) and flame quality. A worn, enlarged, or wrong-size orifice causes sooting, poor flames, or improper firing rate — this OEM spud restores the factory-specified metering.

Specifications

Type: Threaded burner orifice / gas spud
Orifice Drill Size: #43
OEM Part Number: B4089343
Brand: Goodman
Fits Model: GMTH115-5 (and compatible in-shot burner racks)
Fuel: Natural gas (verify size against rating plate / altitude)

OEM vs. Generic

OEM orifices are precision-drilled and pressure-verified to the exact #43 bore and thread pitch. Generic orifices can vary slightly in bore diameter, which directly changes BTU input and combustion safety. For any gas-metering component, OEM is the correct and safest choice.

Installation Difficulty

Moderate (2/5). Threads into the manifold behind each burner; verify orifice size matches the furnace rating plate and local altitude before firing. Gas work — shut off gas and power; use a licensed technician if unsure.

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 #43 Burner Orifice f...

$9.95

Frequently Asked Questions

Does this Burner Orifice fit my Goodman GMTH115-5 Natural Gas Furnace — B4089343?

Yes. This is the factory-specified OEM burner orifice for the Goodman GMTH115-5 Natural Gas Furnace — B4089343. 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 GMTH115-5 Natural Gas Furnace — B4089343?

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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