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Goodman

OEM Goodman Amana Vinyl Cap for AMES960805CNAA — A1781105

SKU: GOODMAN-4866 Brand: Goodman
$1.95 $2.59

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

The Goodman/Amana A1781105 1-piece vinyl cap is a factory-original replacement designed for the AMES960805CNAA gas furnace and other compatible Goodman and Amana equipment. This molded vinyl cap seals an unused port, knockout, or fitting opening on the furnace cabinet or gas/burner assembly, preventing air leaks, debris intrusion, and improper draft. Though small, a missing cap can disrupt the sealed-combustion airflow that high-efficiency furnaces depend on.

  • OEM Part Number: A1781105
  • Part Type: 1-piece vinyl cap / port plug
  • Fits Model: AMES960805CNAA (Amana 96% AFUE gas furnace)
  • Material: Flexible molded vinyl
  • Function: Seals unused ports and openings
  • Fit Type: Direct OEM exact-fit replacement

OEM vs. Generic: The genuine A1781105 is sized to the precise opening diameter used by Goodman/Amana, so it snaps in and stays put. Generic vinyl caps come in mixed sizing kits that may fit loosely, fall out, or fail to seal, allowing air leakage that affects combustion airflow. The OEM part removes the guesswork.

Installation Difficulty: Very Easy (DIY-friendly). Installation takes under 5 minutes — simply press the cap firmly into the target opening until fully seated. No tools required. Power down the furnace before working inside the cabinet as a safety precaution.

Not sure which port this cap covers on your unit? Email info@nationalhvacparts.com with your model and serial and we'll help you confirm.

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

Frequently Asked Questions

Does this Cap fit my Goodman AMES960805CNAA — A1781105?
Yes. This is the factory-specified OEM cap for the Goodman AMES960805CNAA — 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 cap on my Goodman AMES960805CNAA — 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 cap?
Common symptoms: unusual noises, intermittent operation, complete failure, or visible damage. Visit our diagnostic hub for symptom-based troubleshooting.
Is this cap 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 cap?
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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Mike Rivera
HVAC Parts Specialist — Online