What are the specs for this Fitting?

The correct replacement for Goodman model AMEC961004CNAC — 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 AMEC961004CNAC — 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 Kit for AMEC961004CNAC — A1781105

Name: OEM Goodman 1-Piece Vinyl Caps Kit for AMEC961004CNAC — A1781105
Brand: Goodman
SKU: GOODMAN-4299
Price: 1.95 USD
Availability: InStock

SKU: GOODMAN-4299 Brand: Goodman

$1.95 $2.95

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Texas CMBL #19328542014

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Govt POs Accepted

The Goodman A1781105 1-Piece Vinyl Caps are a genuine OEM sealing accessory for the AMEC961004CNAC gas furnace. These vinyl caps close off unused pressure-switch ports, inducer taps, or tubing ends, maintaining the airtight seal a condensing furnace relies on for correct pressure-switch operation. Missing or cracked caps are an easy-to-overlook cause of pressure faults and air leaks.

Specifications

Part Number: A1781105
Type: 1-piece vinyl cap / port plug
Application: Seals unused tubing ports and taps
Fits Model: AMEC961004CNAC (Goodman/Amana gas furnace)
Brand: Goodman OEM

OEM vs. Generic

The genuine Goodman OEM cap is sized to the precise port diameter for a leak-free press fit. Generic vinyl caps may be loose or too tight, allowing air leaks that upset the pressure-switch reading. For such an inexpensive part, OEM is the safe choice.

Installation Difficulty

Very easy (DIY-friendly). Simply press the cap onto the correct port — under 5 minutes, no tools required. Confirm all pressure tubing is routed correctly after installation.

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 K...

$1.95

Frequently Asked Questions

Does this Fitting fit my Goodman AMEC961004CNAC — A1781105?

Yes. This is the factory-specified OEM fitting for the Goodman AMEC961004CNAC — 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 AMEC961004CNAC — 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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