What are the specs for this Piston?

The correct replacement for Goodman model SSX140601AA — 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 SSX140601AA — 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.

IMAGE COMING SOON

Goodman

OEM Goodman Flow Check Piston Restrictor Kit for SSX140601AA — B1789888

Name: OEM Goodman Flow Check Piston Restrictor Kit for SSX140601AA — B1789888
Brand: Goodman
SKU: GOODMAN-868
Price: 10.95 USD
Availability: InStock

SKU: GOODMAN-868 Brand: Goodman

$10.95 $14.78

OEM Guaranteed

Same-Day Ship

30-Day Returns

Secure Checkout

Texas CMBL #19328542014

SAM.gov Registered

Govt POs Accepted

The Goodman B1789888 Flow Check Piston Kit is the genuine OEM refrigerant metering device for the SSX140601AA condensing unit. This flow-check piston (fixed-orifice restrictor) meters liquid refrigerant into the evaporator at the rate the system was engineered for — using the correct orifice size is essential for proper superheat, subcooling, and rated cooling capacity.

Specifications

OEM Part Number: B1789888
Component: Flow check piston / fixed-orifice metering device kit
Compatible Model: Goodman SSX140601AA (and matching SSX14 systems)
Orifice: Factory-sized for the unit's rated tonnage
Type: Bi-flow flow-check restrictor

OEM vs. Generic

This OEM Goodman piston carries the exact orifice diameter the system was charged and rated against. A generic or wrong-size piston will meter too much or too little refrigerant, producing poor cooling, frozen coils, or compressor flooding. Because the metering device directly sets system performance, the genuine part is strongly recommended.

Installation Difficulty: Hard (HVAC professional required)

Replacing a metering device opens the sealed refrigerant circuit. This is a job for an EPA-certified HVAC technician — it requires recovering the refrigerant, accessing the piston body, installing the new piston with correct orientation, evacuating the system, and recharging to the proper subcooling. Do not attempt without recovery equipment and certification.

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 Re...

$10.95

Frequently Asked Questions

Does this Piston fit my Goodman SSX140601AA — B1789888?

Yes. This is the factory-specified OEM piston for the Goodman SSX140601AA — 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 SSX140601AA — 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.

Menu