What are the specs for this Gas Valve Adapter?

The correct replacement for Goodman model GDH80403AXBC — 0259M00005 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 GDH80403AXBC — 0259M00005.

What symptoms indicate I need a new gas valve adapter?

Common symptoms that indicate you need a new gas valve adapter include unusual noises, intermittent operation, complete failure to operate, or visible damage. For specific diagnostic guidance, visit nationalhvacparts.com/pages/hvac-diagnostic.

Is this gas valve adapter 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 Gas Valve Adapter for GDH80403AXBC — 0259M00005

Name: OEM Goodman Gas Valve Adapter for GDH80403AXBC — 0259M00005
Brand: Goodman
SKU: GOODMAN-10243
Price: 14.95 USD
Availability: InStock

SKU: GOODMAN-10243 Brand: Goodman

$14.95 $19.95

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The Goodman 0259M00005 Gas Valve Adapter is a genuine OEM fitting that connects the gas valve to the burner manifold on the Goodman GDH80403AXBC gas furnace. It provides the correct thread interface and orientation so fuel is delivered to the manifold at the proper position for safe, leak-free operation.

Adapters can develop pipe-thread leaks, cross-threading, or corrosion over years of service — issues that show up as gas odor, ignition problems, or failed leak checks. Replacing a worn adapter with the exact OEM fitting restores a gas-tight connection and correct valve alignment.

Specifications

Type: Gas valve-to-manifold adapter fitting
OEM Part Number: 0259M00005
Brand: Goodman
Compatible model: GDH80403AXBC (80% AFUE gas furnace)
Function: Threaded connection between gas valve and manifold

OEM vs. Generic

The OEM adapter guarantees the exact thread size, length, and valve orientation for your furnace. A generic fitting may seat differently and complicate leak-testing. For a gas-carrying connection, the OEM part is the safe choice.

Install Difficulty

Moderate (3/5). Gas work — shut off gas and power first. Use approved thread sealant and perform a soap-bubble leak test after assembly. If you are not comfortable with gas connections, hire a licensed HVAC technician. Allow 30–45 minutes.

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 Gas Valve Adapter fo...

$14.95

Frequently Asked Questions

Does this Gas Valve Adapter fit my Goodman GDH80403AXBC — 0259M00005?

Yes. This is the factory-specified OEM gas valve adapter for the Goodman GDH80403AXBC — 0259M00005. 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 gas valve adapter on my Goodman GDH80403AXBC — 0259M00005?

Requires licensed HVAC technician. Gas valve work involves gas lines that must meet local building codes. Improper installation risks dangerous gas leaks. Buy the part yourself to save 40–60% on markup, then have your technician install it.

What symptoms mean I need a new gas valve adapter?

Common symptoms: unusual noises, intermittent operation, complete failure, or visible damage. Visit our diagnostic hub for symptom-based troubleshooting.

Is this gas valve adapter 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 gas valve adapter?

Always use OEM. Gas valves must match exact pressure ratings, port configurations, and safety certifications. Non-OEM gas valves can create safety hazards and may violate building codes.

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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