What are the specs for this Piston Kit?

The correct replacement for Goodman model GSC130481AB — B1789882 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 GSC130481AB — B1789882.

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 Piston / Flowrator Kit for GSC130481AB — B1789882

Name: OEM Goodman Piston / Flowrator Kit for GSC130481AB — B1789882
Brand: Goodman
SKU: GOODMAN-714
Price: 10.95 USD
Availability: InStock

SKU: GOODMAN-714 Brand: Goodman

$10.95 $14.78

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Texas CMBL #19328542014

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The Goodman B1789882 is a genuine OEM piston (flowrator) metering kit for the GSC130481AB 13 SEER, 4-ton outdoor condensing unit. The piston is a fixed-orifice metering device that controls the precise rate of refrigerant entering the evaporator coil. Using the correct, factory-matched orifice size is critical — the wrong bore starves or floods the coil, killing efficiency and risking compressor damage.

Type: Fixed-orifice piston / flowrator
Application: Refrigerant metering at the coil
Fits: Goodman GSC130481AB and matching 13 SEER 4-ton systems
Refrigerant: Sized for the OEM system charge
Kit: Piston insert with seal

OEM vs. Generic: Orifice diameter is matched to the exact tonnage and SEER rating of this system. A genuine Goodman piston guarantees the correct bore size; mismatched aftermarket pistons can shift superheat and subcooling out of spec, causing poor cooling and short-cycling. For metering devices, OEM accuracy is non-negotiable.

Install difficulty: Hard. Installing a piston requires recovering the refrigerant charge, opening the line set or coil connection, replacing the insert, then evacuating and recharging the system. This is EPA-certified technician work only.

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 Piston / Flowrator K...

$10.95

Frequently Asked Questions

Does this Piston Kit fit my Goodman GSC130481AB — B1789882?

Yes. This is the factory-specified OEM piston kit for the Goodman GSC130481AB — B1789882. 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 GSC130481AB — B1789882?

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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OEM Goodman Piston / Flowrator Kit for GSC130481AB — B1789882

Shipping Information

Return Policy

Frequently Asked Questions