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Goodman

OEM Goodman Vinyl Cap (1-Piece) for AMSS960603BNAA — A1781105

SKU: GOODMAN-A1781105 Brand: Goodman
$3.95 $4.95

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

The Goodman A1781105 1-Piece Vinyl Cap is a genuine OEM fitting used on the Amana/Goodman AMSS960603BNAA 96% AFUE gas furnace. This flexible vinyl cap plugs an unused port, tube, or fitting to keep the pressure and combustion circuits sealed and to block dust and pests during shipping, storage, or seasonal shutdown. A missing cap can create a pressure leak that trips the furnace's safety switches.

  • Part Number: A1781105 (OEM Goodman/Amana)
  • Type: One-piece flexible vinyl cap / plug
  • Function: Seals and protects unused ports and fittings
  • Fits: AMSS960603BNAA and compatible Goodman/Amana furnaces
  • Material: Heat-resistant vinyl

OEM vs. Generic: The OEM A1781105 is molded to the exact port diameter used on Goodman furnaces, so it seats snugly and stays put through temperature swings. Generic caps that are slightly off-size can pop off or leak, undermining pressure-switch operation. For a guaranteed seal, use the OEM cap.

Install difficulty: Very Easy (1/5). Simply push the cap onto the port or fitting by hand. No tools required; installs in seconds.

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 Vinyl Cap fit my Goodman AMSS960603BNAA — A1781105?
Yes. This is the factory-specified OEM vinyl cap for the Goodman AMSS960603BNAA — 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 vinyl cap on my Goodman AMSS960603BNAA — 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 vinyl cap?
Common symptoms: unusual noises, intermittent operation, complete failure, or visible damage. Visit our diagnostic hub for symptom-based troubleshooting.
Is this vinyl 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 vinyl 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