What are the specs for this Refrigerant Piston Kit?

The correct replacement for Goodman model SSX140241AB — B1789857 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 SSX140241AB — B1789857.

What symptoms indicate I need a new refrigerant piston kit?

Common symptoms that indicate you need a new refrigerant piston kit 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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Goodman

OEM Goodman Refrigerant Piston Kit for SSX140241AB — B1789857

Name: OEM Goodman Refrigerant Piston Kit for SSX140241AB — B1789857
Brand: Goodman
SKU: GOODMAN-859
Price: 10.95 USD
Availability: InStock

SKU: GOODMAN-859 Brand: Goodman

$10.95 $14.78

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Texas CMBL #19328542014

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The Goodman B1789857 Piston Kit is a genuine OEM refrigerant metering device (fixed-orifice piston) engineered for SSX140241AB air conditioner systems. The piston meters liquid refrigerant into the evaporator coil at the precise rate the system was designed for, ensuring correct superheat, capacity, and efficiency. Using the factory-specified orifice size is essential — an incorrect bore changes refrigerant flow and can hurt cooling performance and compressor life.

Specifications

Part Type: Fixed-orifice refrigerant piston (metering device)
OEM Part Number: B1789857
Brand: Goodman
Fits Model: SSX140241AB air conditioner
Function: Meters refrigerant flow to the evaporator coil
Compatibility: Matched to OEM system tonnage and coil pairing

OEM vs. Generic

The OEM piston is sized to the exact orifice diameter the system was engineered and charged for. Generic pistons vary in bore tolerance, and even a small deviation shifts superheat and capacity. For correct system performance and to protect the compressor, the factory-spec piston is strongly recommended.

Installation Difficulty

Advanced / Professional — Replacing a piston requires opening the sealed refrigerant circuit: recover the charge, access the metering device, swap the piston, evacuate, and recharge to spec. This is EPA Section 608 certified work and should be performed by 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 Refrigerant Piston K...

$10.95

Frequently Asked Questions

Does this Refrigerant Piston Kit fit my Goodman SSX140241AB — B1789857?

Yes. This is the factory-specified OEM refrigerant piston kit for the Goodman SSX140241AB — B1789857. 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 refrigerant piston kit on my Goodman SSX140241AB — B1789857?

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 refrigerant piston kit?

Common symptoms: unusual noises, intermittent operation, complete failure, or visible damage. Visit our diagnostic hub for symptom-based troubleshooting.

Is this refrigerant piston kit 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 refrigerant piston kit?

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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