What are the specs for this Burner Orifice?

The correct replacement for Goodman model AMS81155CNA — 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 AMS81155CNA — 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 AMS81155CNA — B4089343

Name: OEM Goodman #43 Natural Gas Burner Orifice for AMS81155CNA — B4089343
Brand: Goodman
SKU: GOODMAN-7175
Price: 5.95 USD
Availability: InStock

SKU: GOODMAN-7175 Brand: Goodman

$5.95 $7.95

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Goodman B4089343 #43 Natural Gas Burner Orifice

The Goodman/Amana B4089343 is a genuine OEM natural gas burner orifice (spud) engineered for the AMS81155CNA 80% AFUE gas furnace and compatible Goodman/Amana models. Each orifice meters the precise gas flow into a single burner, so a worn, corroded, or incorrectly drilled orifice can cause lazy flames, delayed ignition, sooting, or nuisance limit trips. Replacing all orifices as a set restores the factory heat-rate and clean, blue flames.

Specifications

Orifice size: #43 drill
Fuel: Natural gas
Thread: 1/8" NPT brass spud (OEM)
Fits: AMS81155CNA and related Goodman/Amana 80% AFUE furnaces
Material: Machined brass

OEM vs. Generic

The OEM B4089343 is drilled and gauged to Goodman's exact BTU specification, guaranteeing correct input rate and CSA-listed combustion. Generic orifices are often stamped to a nominal size and can vary by a few thousandths of an inch — enough to over- or under-fire the burner. For a safety-listed gas appliance we strongly recommend the OEM part.

Installation Difficulty: Easy (1/5)

Shut off gas and power, remove the burner assembly or manifold, thread out the old orifice with a deep socket, and install the new spud hand-tight plus a snug turn. Always leak-check with soap solution and verify flame appearance after service. Gas work should be performed by a qualified HVAC technician where required by local 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 #43 Natural Gas Burn...

$5.95

Frequently Asked Questions

Does this Burner Orifice fit my Goodman AMS81155CNA — B4089343?

Yes. This is the factory-specified OEM burner orifice for the Goodman AMS81155CNA — 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 AMS81155CNA — 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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