What are the specs for this Burner Orifice?

The correct replacement for Goodman model AMS80904BXA 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 AMS80904BXA 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 AMS80904BXA Furnace — B4089343

Name: OEM Goodman #43 Burner Orifice for AMS80904BXA Furnace — B4089343
Brand: Goodman
SKU: GOODMAN-7084
Price: 5.95 USD
Availability: InStock

SKU: GOODMAN-7084 Brand: Goodman

$5.95 $7.95

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The Goodman B4089343 #43 Burner Orifice is a genuine OEM gas metering spud for the AMS80904BXA gas furnace and compatible Goodman/Amana models. The orifice threads into the manifold and meters the precise gas flow into each in-shot burner, setting the furnace's firing rate. The #43 drill size is factory-matched to the unit's rated BTU input on natural gas.

Specifications

Component: Threaded burner orifice / spud
Drill size: #43
OEM Part Number: B4089343
Fits: AMS80904BXA and select Goodman/Amana gas furnaces
Function: Meters gas flow to the burner (firing rate)

OEM vs. Generic

Orifice sizing directly controls BTU input and combustion safety, so an exact-size OEM spud is essential. A generic or wrong-size orifice can over- or under-fire the furnace, causing sooting, high CO, or poor heating. Always confirm fuel type (NG vs. LP) before ordering — LP requires a different orifice.

Installation Difficulty

Moderate (3/5). Requires shutting off gas, removing the manifold, and threading in the new orifice with proper sealant. Verify firing rate and check for leaks after install. Recommended for experienced DIYers or a licensed 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 Burner Orifice f...

$5.95

Frequently Asked Questions

Does this Burner Orifice fit my Goodman AMS80904BXA Furnace — B4089343?

Yes. This is the factory-specified OEM burner orifice for the Goodman AMS80904BXA 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 AMS80904BXA 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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