What are the specs for this Fitting?

The correct replacement for Goodman model AMES960403BUAA — A1781105 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 AMES960403BUAA — A1781105.

What symptoms indicate I need a new fitting?

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

Is this fitting 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 Vinyl Cap Fitting for AMES960403BUAA — A1781105

Name: OEM Goodman Vinyl Cap Fitting for AMES960403BUAA — A1781105
Brand: Goodman
SKU: GOODMAN-4800
Price: 6.95 USD
Availability: InStock

SKU: GOODMAN-4800 Brand: Goodman

$6.95 $8.95

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Goodman A1781105 Vinyl Cap

The Goodman A1781105 is a genuine OEM 1-piece vinyl protective cap used on the AMES960403BUAA gas furnace and compatible Goodman/Amana equipment. This small but essential fitting seals off unused ports, protects terminals and tubing ends from dust and moisture, and keeps the furnace cabinet finished to factory specification. Because it is a factory part, it drops into place with no trimming or modification.

Type: 1-piece vinyl cap / protective fitting
Material: Flexible vinyl
Fit: Direct OEM replacement for AMES960403BUAA
Brand: Goodman / Amana genuine part
Part number: A1781105

OEM vs. Generic

Generic universal caps are often the wrong durometer or diameter and can loosen with furnace vibration and heat cycling. The genuine A1781105 is molded to the exact factory dimensions, so it stays seated and maintains the intended seal for the life of the unit. For a part this inexpensive, OEM is the reliable choice.

Installation Difficulty

Easy — DIY friendly. Push-on installation, no tools required. Always disconnect power to the furnace before servicing. If you are unsure of the cap's location, consult your unit's service manual or 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 Vinyl Cap Fitting fo...

$6.95

Frequently Asked Questions

Does this Fitting fit my Goodman AMES960403BUAA — A1781105?

Yes. This is the factory-specified OEM fitting for the Goodman AMES960403BUAA — A1781105. 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 fitting on my Goodman AMES960403BUAA — A1781105?

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 fitting?

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

Is this fitting 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 fitting?

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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