What are the specs for this Piston?

The correct replacement for Goodman model SSX140601AB — B1789888 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 SSX140601AB — B1789888.

What symptoms indicate I need a new piston?

Common symptoms that indicate you need a new piston 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 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 Flow Check Piston Kit for SSX140601AB — B1789888

Name: OEM Goodman Flow Check Piston Kit for SSX140601AB — B1789888
Brand: Goodman
SKU: GOODMAN-873
Price: 10.95 USD
Availability: InStock

SKU: GOODMAN-873 Brand: Goodman

$10.95 $14.78

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Texas CMBL #19328542014

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Overview

The Goodman B1789888 is an OEM flow check piston (refrigerant metering orifice) kit for the SSX140601AB 14 SEER, 5-ton air conditioner. The piston meters liquid refrigerant into the evaporator coil at the precise rate the system is designed for, ensuring proper superheat, subcooling, and cooling capacity. Using the correctly sized orifice is essential when matching a condenser to an indoor coil.

Specifications

OEM Part Number: B1789888
Fits: Goodman SSX140601AB (and compatible SSX14 series)
Type: Flow check piston / fixed orifice metering device
Application: Liquid-line refrigerant metering
Kit: Includes piston and seal

OEM vs. Generic

The genuine OEM piston carries the exact bore size specified for this condenser-coil match. An incorrectly sized aftermarket orifice causes flooding or starving of the coil, killing efficiency and risking compressor damage. Always use the factory-specified piston.

Installation Difficulty

Professional / Advanced — requires recovering refrigerant, opening the liquid line, swapping the piston, and recharging the system. This is EPA Section 608 certified work. Recover refrigerant and follow proper evacuation procedures.

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 Flow Check Piston Ki...

$10.95

Frequently Asked Questions

Does this Piston fit my Goodman SSX140601AB — B1789888?

Yes. This is the factory-specified OEM piston for the Goodman SSX140601AB — B1789888. 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 on my Goodman SSX140601AB — B1789888?

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?

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

Is this piston 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?

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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