What are the specs for this Piston Kit?

The correct replacement for Goodman model SSX140181BA — B1789853 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 SSX140181BA — B1789853.

What symptoms indicate I need a new piston kit?

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

Is this piston kit 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 Refrigerant Piston / Flowrator Kit for SSX140181BA — B1789853

Name: OEM Goodman Refrigerant Piston / Flowrator Kit for SSX140181BA — B1789853
Brand: Goodman
SKU: GOODMAN-847
Price: 10.95 USD
Availability: InStock

SKU: GOODMAN-847 Brand: Goodman

$10.95 $14.78

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Goodman B1789853 Piston / Flowrator Kit

The B1789853 is the genuine OEM refrigerant metering piston (flowrator) kit for the Goodman SSX140181BA R-410A condensing unit. The piston meters refrigerant flow into the indoor coil, setting the correct pressure drop and superheat for the matched system. Using the factory-specified orifice size is critical: an incorrect piston causes poor cooling, flooding, or compressor damage. This kit delivers the exact bore Goodman engineered for this 1.5-ton condenser.

Specifications

Part type: Fixed-orifice metering piston (flowrator) kit
OEM part number: B1789853
Fits model: Goodman SSX140181BA condensing unit
Refrigerant: R-410A
Includes: Factory-sized piston for correct charge balancing

OEM vs. Generic

Metering pistons are size-critical. The genuine B1789853 is bored to Goodman's exact specification for this model, so superheat and subcooling land in range during charging. Generic or mismatched pistons force technicians to chase symptoms and risk under- or over-feeding the evaporator. For predictable performance, use the OEM kit.

Installation

Difficulty: Advanced (4/5). Replacing the piston requires recovering the system refrigerant, opening the liquid-line piston housing, swapping the orifice, evacuating to vacuum, and recharging by weight. 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 /...

$10.95

Frequently Asked Questions

Does this Piston Kit fit my Goodman SSX140181BA — B1789853?

Yes. This is the factory-specified OEM piston kit for the Goodman SSX140181BA — B1789853. 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 piston kit on my Goodman SSX140181BA — B1789853?

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 piston kit?

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

Is this 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 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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