What are the specs for this Fitting?

The correct replacement for Goodman model AMES960603BNAA — 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 AMES960603BNAA — 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 Caps for AMES960603BNAA — A1781105

Name: OEM Goodman 1-Piece Vinyl Caps for AMES960603BNAA — A1781105
Brand: Goodman
SKU: GOODMAN-4819
Price: 6.95 USD
Availability: InStock

SKU: GOODMAN-4819 Brand: Goodman

$6.95 $8.95

OEM Guaranteed

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Texas CMBL #19328542014

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The Goodman A1781105 1-Piece Vinyl Caps are genuine OEM sealing caps used on the Amana AMES960603BNAA gas furnace. These flexible vinyl plugs cap off unused ports, tubing stubs, and pressure-tap fittings to keep the combustion and venting system airtight. Small as they are, a missing or brittle cap can cause a pressure-switch fault or an air leak that keeps the furnace from starting.

Specifications

OEM Part Number: A1781105
Type: 1-piece vinyl cap / port plug
Function: Seals unused ports and tubing connections
Material: Flexible vinyl
Fits: Amana / Goodman AMES960603BNAA furnace
Equipment: Gas Furnace

OEM vs. Generic

This OEM Goodman/Amana cap is sized to the exact port diameter for a positive, airtight seal. Generic caps in the wrong size can slip off or fail to seal, reintroducing the very leak you're trying to fix.

Installation Difficulty

Very Easy (1/5). Push-on installation in under 5 minutes — no tools required. Simply seat the cap firmly over the port or tubing end and confirm it's snug.

Genuine replacement parts with fast shipping from NationalHVACParts.com.

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 Caps f...

$6.95

Frequently Asked Questions

Does this Fitting fit my Goodman AMES960603BNAA — A1781105?

Yes. This is the factory-specified OEM fitting for the Goodman AMES960603BNAA — 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 AMES960603BNAA — 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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