What are the specs for this Vinyl Cap?

The correct replacement for Goodman model AMSS920603BNAA — 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 AMSS920603BNAA — A1781105.

What symptoms indicate I need a new vinyl cap?

Common symptoms that indicate you need a new vinyl cap include unusual noises, intermittent operation, complete failure to operate, or visible damage. For specific diagnostic guidance, visit nationalhvacparts.com/pages/hvac-diagnostic.

Is this vinyl cap 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 Vinyl End Cap (1-Piece) for AMSS920603BNAA — A1781105

Name: OEM Goodman Vinyl End Cap (1-Piece) for AMSS920603BNAA — A1781105
Brand: Goodman
SKU: GOODMAN-7443
Price: 1.95 USD
Availability: InStock

SKU: GOODMAN-7443 Brand: Goodman

$1.95 $2.55

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Goodman A1781105 1-Piece Vinyl Cap

The Goodman A1781105 is an OEM 1-piece vinyl cap used to seal, cap off, or protect a port, tube, or fitting on furnaces such as the AMSS920603BNAA. These caps prevent debris intrusion, close unused ports, and protect exposed connections during shipping, storage, and installation. Replacing a missing or brittle cap keeps the cabinet clean and maintains any intended port closure.

Specifications

Type: 1-piece molded vinyl cap
Material: Flexible vinyl
Function: Seals or protects ports, tubes, and fittings against dust and debris
Fit: Direct OEM replacement sized to factory fitting
Compatibility: Goodman & Amana furnaces including AMSS920603BNAA
OEM Part Number: A1781105

OEM vs. Generic

The genuine Goodman vinyl cap is molded to the exact diameter of the factory port so it stays seated and provides a snug fit. Generic caps in approximate sizes tend to fall off or fit loosely. For a clean, correct closure, the OEM cap is the reliable choice.

Installation Difficulty

Very Easy (1 of 5) — 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

OEM Goodman Vinyl End Cap (1-Pie...

$1.95

Frequently Asked Questions

Does this Vinyl Cap fit my Goodman AMSS920603BNAA — A1781105?

Yes. This is the factory-specified OEM vinyl cap for the Goodman AMSS920603BNAA — 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 AMSS920603BNAA — 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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