What are the specs for this Fitting?

The correct replacement for Goodman model VMSS960403ANAA — 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 VMSS960403ANAA — 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 Vinyl Cap Fitting for VMSS960403ANAA — A1781105

Name: OEM Goodman Vinyl Cap Fitting for VMSS960403ANAA — A1781105
Brand: Goodman
SKU: GOODMAN-13765
Price: 4.95 USD
Availability: InStock

SKU: GOODMAN-13765 Brand: Goodman

$4.95 $6.49

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Texas CMBL #19328542014

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The Goodman A1781105 1-Piece Vinyl Cap is a genuine OEM fitting engineered as a direct-fit replacement for the Goodman VMSS960403ANAA gas furnace and compatible units. This small but essential component seals and protects unused ports, tubing ends, and access openings, preventing air leaks, debris intrusion, and moisture ingress that can degrade furnace performance over time.

Type: 1-piece vinyl protective cap / plug fitting
Material: Durable heat-resistant vinyl
OEM Part Number: A1781105
Brand: Goodman
Fits: VMSS960403ANAA and compatible Goodman furnaces
Application: Port/tube sealing and protection

OEM vs. Generic

Choosing the genuine Goodman OEM A1781105 guarantees an exact dimensional match and correct vinyl durometer, ensuring a snug, lasting seal. Generic universal caps often fit loosely or harden and crack under furnace heat cycling, leading to premature failure. For a component this affordable, OEM is the smart choice for long-term reliability.

Installation Difficulty

Easy (1/5). No tools required — simply press the cap onto the intended port or tube end. Always shut off power and gas to the furnace before servicing. If unsure of the correct location, consult your Goodman service manual or a licensed HVAC technician.

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 Cap Fitting fo...

$4.95

Frequently Asked Questions

Does this Fitting fit my Goodman VMSS960403ANAA — A1781105?

Yes. This is the factory-specified OEM fitting for the Goodman VMSS960403ANAA — 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 VMSS960403ANAA — 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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