What are the specs for this Fitting?

The correct replacement for Goodman model AMES960603BUAB Furnace — 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 AMES960603BUAB Furnace — 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 1-Piece Vinyl Cap for AMES960603BUAB Furnace — A1781105

Name: OEM Goodman 1-Piece Vinyl Cap for AMES960603BUAB Furnace — A1781105
Brand: Goodman
SKU: GOODMAN-4831
Price: 1.95 USD
Availability: InStock

SKU: GOODMAN-4831 Brand: Goodman

$1.95 $2.59

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The Goodman A1781105 is a genuine OEM 1-piece vinyl cap used on the Amana AMES960603BUAB gas furnace and related Goodman/Amana models. This small but essential protective cap seals an unused port, tube stub, or fastener location to keep dust, debris, and air infiltration out of the sealed combustion path. Though inexpensive, using the correct factory cap keeps the cabinet's airflow and combustion tuning exactly as engineered.

Specifications

Part Number: A1781105
Type: 1-piece protective vinyl cap
Fits: Amana AMES960603BUAB and compatible Goodman/Amana furnaces
Material: Flexible vinyl
Function: Seals/caps port or stub, blocks debris and air leakage
Equipment: Gas Furnace

OEM vs. Generic

The OEM A1781105 is sized to the exact stub diameter it protects, so it grips snugly and stays seated through heat cycling and vibration. Generic vinyl caps come in loose size ranges — too tight and they split, too loose and they fall off, leaving an open port that can affect airflow or invite pests and moisture. For a couple of dollars, the correct factory cap removes the guesswork.

Installation

Difficulty: Very Easy (DIY-friendly). Under 5 minutes. Simply push the cap onto the intended stub or port until fully seated. No tools required. Ideal to keep a few on hand for routine service and reassembly after maintenance.

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 1-Piece Vinyl Cap fo...

$1.95

Frequently Asked Questions

Does this Fitting fit my Goodman AMES960603BUAB Furnace — A1781105?

Yes. This is the factory-specified OEM fitting for the Goodman AMES960603BUAB Furnace — 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 AMES960603BUAB Furnace — 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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