What are the specs for this Fitting?

The correct replacement for Amana model AMEC960403ANAB — 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 Amana equipment which lists the model number AMEC960403ANAB — 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.

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Amana

OEM Goodman 1-Piece Vinyl Caps for AMEC960403ANAB — A1781105

Name: OEM Goodman 1-Piece Vinyl Caps for AMEC960403ANAB — A1781105
Brand: Amana
SKU: GOODMAN-4118
Price: 1.95 USD
Availability: InStock

SKU: GOODMAN-4118 Brand: Amana

$1.95 $2.99

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Amana / Goodman A1781105 1-Piece Vinyl Caps

The A1781105 is a genuine OEM 1-piece vinyl cap for the Amana AMEC960403ANAB gas furnace and compatible Goodman/Amana models. These protective vinyl caps seal off unused drain ports, tubing connections, or terminal stubs, keeping out dust, moisture, and insects while giving the furnace a clean factory finish. Though small, missing caps can allow air leaks around the induced-draft and condensate ports that affect pressure-switch readings on high-efficiency units.

Specifications

Type: 1-piece protective vinyl cap
Material: Flexible molded vinyl
Use: Seals unused ports, tubing ends, and terminals
Fits: AMEC960403ANAB and select Goodman/Amana furnaces
OEM Part Number: A1781105

OEM vs. Generic

The OEM Amana cap is sized to the furnace's exact port diameter for a snug, airtight seal. Generic hardware-store caps are often loose or too rigid, popping off with vibration or failing to seal condensing-side ports. For a couple of dollars, the OEM part guarantees the correct fit.

Installation

Difficulty: Very Easy (1/5). No tools required — simply push the cap firmly onto the port or terminal until fully seated. A 2-minute job. Order extras to keep on hand as spares.

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...

$1.95

Frequently Asked Questions

Does this Fitting fit my Amana AMEC960403ANAB — A1781105?

Yes. This is the factory-specified OEM fitting for the Amana AMEC960403ANAB — 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 Amana AMEC960403ANAB — 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 Amana 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 Amana 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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