What are the specs for this Burner Orifice?

The correct replacement for Goodman model AMV80703BXA — 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 AMV80703BXA — 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 AMV80703BXA — B4089343

Name: OEM Goodman #43 Burner Orifice for AMV80703BXA — B4089343
Brand: Goodman
SKU: GOODMAN-B4089343
Price: 5.95 USD
Availability: InStock

SKU: GOODMAN-B4089343 Brand: Goodman

$5.95 $7.95

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Goodman B4089343 #43 Burner Orifice

The B4089343 is a genuine Goodman/Amana natural-gas burner orifice (spud) engineered for the AMV80703BXA 80% AFUE upflow/horizontal gas furnace and other compatible multi-position models. The #43 drill-size bore precisely meters the gas flow to each burner, ensuring a clean, stable flame, correct BTU input, and safe, efficient combustion. Using the factory orifice size is critical — an incorrect bore can cause sooting, delayed ignition, or an over/under-fired heat exchanger.

Specifications

OEM Part Number: B4089343
Orifice Size: #43 drill (natural gas)
Thread: standard Goodman/Amana burner spud thread
Material: machined brass
Fuel: Natural Gas
Fits: AMV80703BXA and related 80% AFUE Goodman/Amana furnaces

OEM vs. Generic

Our OEM B4089343 is the exact factory spud with a certified bore diameter and thread pitch, so gas input matches the furnace rating plate out of the box. Generic orifices vary in bore tolerance and thread finish, risking improper firing and nuisance lockouts. For a safety-critical gas component, OEM is the recommended choice.

Installation Difficulty

Moderate — requires shutting off gas, removing the burner assembly, and swapping the orifice with a nut driver, then leak-checking. Gas work should be performed by a qualified HVAC technician. Always verify manifold pressure after replacement.

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 AMV80703BXA — B4089343?

Yes. This is the factory-specified OEM burner orifice for the Goodman AMV80703BXA — 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 AMV80703BXA — 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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