What are the specs for this Burner Orifice?

The correct replacement for Goodman model AMS81405DNA — 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 AMS81405DNA — 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 Natural Gas Burner Orifice for AMS81405DNA — B4089343

Name: OEM Goodman #43 Natural Gas Burner Orifice for AMS81405DNA — B4089343
Brand: Goodman
SKU: GOODMAN-7239
Price: 9.95 USD
Availability: InStock

SKU: GOODMAN-7239 Brand: Goodman

$9.95 $12.95

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Goodman B4089343 #43 Natural Gas Burner Orifice

The Goodman B4089343 is a genuine OEM burner orifice (spud) drilled to #43 size for use with the AMS81405DNA furnace and compatible Goodman/Amana models on natural gas. The orifice meters the exact gas flow into each in-shot burner, setting the furnace's BTU input and air-fuel ratio. A worn, enlarged, or debris-clogged orifice throws off combustion — causing sooting, lifting flames, or reduced heat output — so precise sizing matters.

Type: Burner orifice / gas spud
Drill Size: #43 (natural gas)
Fits Model: AMS81405DNA and compatible Goodman/Amana furnaces
Function: Meters gas flow to set BTU input per burner
Material: Machined brass with factory-calibrated bore

OEM vs. Generic

Genuine OEM Goodman orifices are machined to the precise #43 bore and thread pitch your furnace requires, guaranteeing correct BTU input and clean combustion. Generic or mis-drilled spuds can over- or under-fire the furnace, risking sooting or heat-exchanger damage. Always match the orifice to your fuel type (natural gas vs. LP) — OEM removes the guesswork.

Installation Difficulty

Moderate (3/5). Involves gas work: shut off gas and power, remove the manifold, thread out the old spuds, and install the new #43 orifices to spec. Verify manifold pressure and perform a flame/combustion check afterward. If uncertain, use a licensed HVAC technician.

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 Natural Gas Burn...

$9.95

Frequently Asked Questions

Does this Burner Orifice fit my Goodman AMS81405DNA — B4089343?

Yes. This is the factory-specified OEM burner orifice for the Goodman AMS81405DNA — 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 AMS81405DNA — 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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